25 Most Asked Questions About
Coffee Machines, Grinders & Thermomix®

Single boiler: One boiler handles both brewing and steaming. You brew espresso, then switch the boiler to a higher temperature to steam milk — requiring a wait between each step. Simple and affordable, but slower workflow. Ideal for beginners who primarily drink black espresso.

Heat exchanger (HX): A single large steam boiler contains a copper tube running through it. Fresh water from the reservoir is flash-heated as it passes through this tube, reaching brew temperature independently of the steam boiler temperature — allowing near-simultaneous brewing and steaming. No waiting, powerful steam, but requires a short cooling flush before brewing to stabilise brew temperature. The Lelit Mara X and Rocket Appartamento are heat exchangers.

Dual boiler: Two completely independent boilers — one held at precise brew temperature (PID-controlled), one held at steam temperature. Truly simultaneous brewing and steaming with the most precise temperature stability of any design. No cooling flush required. The Lelit Elizabeth and Lelit Bianca V3 are dual boiler machines.

A PID (Proportional-Integral-Derivative) controller is an electronic temperature regulation system that uses a probe sensor and a mathematical algorithm to hold boiler water at an exact set temperature — typically within 0.1°C–0.5°C. Without a PID, machines use a pressurestat that allows temperature to swing 5–10°C during idle periods. Because espresso extraction is highly sensitive to temperature — a 2°C difference noticeably changes the flavour balance — PID control is the single most impactful upgrade for shot-to-shot consistency.

All Lelit machines in our range feature PID temperature control as standard. When comparing machines, always confirm PID is included — it should be non-negotiable for any serious South African home barista.

Flow control allows you to manually adjust the flow rate of water through the coffee puck during extraction — typically via a paddle, needle valve, or electronic actuator. By reducing flow at the start of a shot, you create a gentle pre-infusion that wets the puck evenly before full pressure builds, reducing channelling and improving extraction evenness. Advanced profiles — ramping pressure up slowly, holding it, then dropping — can unlock flavour complexity impossible with fixed-pressure extraction.

The Lelit Bianca V3 uses a precision flow control paddle that gives South African home baristas manual pressure profiling previously only available on commercial machines costing five times more. If you enjoy the technical craft of espresso and want to maximise what different beans can express, flow control is transformative. If you want excellent consistent espresso without the learning curve, a PID dual boiler without flow control — like the Lelit Elizabeth — is the more practical choice.

For a first espresso machine, the priority is reliability, simplicity and the quality of the group head and portafilter system — because these determine long-term flexibility and accessory compatibility.

Gaggia Classic E24 — Italy’s most celebrated entry-level machine, with a commercial-style 58mm group head, solid build quality and a straightforward learning curve. Available in multiple colours. Best overall beginner choice.

Gaggia Espresso Evolution — The most accessible entry point in our range. Compact, easy to use, and produces a genuinely excellent espresso for its price.

Lelit Anna PID — The first significant step up: adds a PID controller for precise temperature, a factory-fitted manometer (pressure gauge) and Italian prosumer build quality. The Lelit Anna PID is the natural choice for South African buyers who want to grow into their machine over several years.

Bean to cup (automatic): The machine grinds, doses, tamps and brews at the touch of one button. Cappuccinos, lattes and flat whites are produced fully automatically. No skill or technique required — ideal for households where multiple people drink different coffee styles. Gaggia Accademia, Cadorna Prestige, Magenta Plus, Anima Prestige.

Manual espresso machine: You grind separately (on a dedicated grinder), dose, tamp and pull the shot yourself. Requires learning and practice, but offers a fundamentally higher quality ceiling and the craft satisfaction of making espresso. The machine + separate grinder also typically outperforms any bean-to-cup machine in terms of espresso quality.

For South African families who want excellent coffee without the daily ritual — bean to cup. For those who enjoy the process and want café-quality at its absolute best — manual machine with a dedicated grinder.

Yes. Coffee & Blenders SA stocks four commercial two-group espresso machines suitable for South African cafés, restaurants and serious home setups:

Lelit Giulietta X — Premium 2-group with HX thermosyphon, IMS precision baskets, LCD shot timer and commercial build quality. The most technologically advanced commercial machine in our range.

Wega Pegaso — Entry-level commercial, available in semi-auto or volumetric, with a rotary pump for quiet operation and direct plumbing capability.

Wega Orion — Commercial 2-group with optional gas heating for load shedding resilience — the most practical commercial machine for South African operators who cannot afford service downtime during power outages.

Wega Lunna — Raised group heads for tall cups, modern design in black or white, volumetric only.

All four pair with the Macap MI20 Touch (150 cups/day) or Macap MI40 Touch (300 cups/day) commercial grinders for a complete café solution delivered anywhere in South Africa.

South Africa has moderately hard to very hard tap water in most urban areas — particularly across Gauteng — which accelerates limescale build-up inside boilers, heat exchangers and group heads. Limescale reduces heating efficiency, narrows water flow, and eventually causes machine failure if left untreated.

With unfiltered tap water: Descale every 2–3 months for daily use. With a water filter: Every 4–6 months.

Always use a manufacturer-recommended citric acid descaling solution — never vinegar, which can damage rubber group head seals and brass boiler components. The Gaggia automatic machines have built-in descaling cycle alerts. For manual machines, schedule descaling by calendar rather than waiting for symptoms.

Yes — this is one of the most consistently repeated insights across every serious home barista community in 2025–2026. Your coffee grinder has more direct impact on espresso quality than your espresso machine. The grinder controls particle size and particle size consistency — the two factors that determine how evenly water extracts coffee compounds. Uneven particles mean simultaneous over-extraction of fines and under-extraction of larger particles in the same shot, producing muddy, harsh, unbalanced flavour.

A R15,000 espresso machine paired with a cheap blade grinder will produce worse espresso than a R8,000 machine paired with a good burr grinder. The universal recommendation across all specialty coffee communities: always invest the maximum your budget allows in the grinder, and allow the machine to absorb any budget compromise.

Flat burr grinders use two horizontal, face-to-face rings that shear coffee between parallel cutting edges. They produce very uniform particle sizes — the grounds exit the burrs in all directions and travel similar distances before landing in the catch, resulting in high flavour clarity, brightness and separation of flavour notes. The professional standard for espresso globally. All Eureka, Macap and Presso grinders in our range use flat burrs.

Conical burr grinders use a cone-shaped inner burr rotating inside a ring burr. Coffee falls through a downward path, producing a slightly wider particle size distribution that many describe as rounder, sweeter, and more forgiving of dialling-in imprecision. Popular for filter coffee and a natural choice for darker roasts. Many hand grinders use conical burrs.

In 2025–2026, flat burr grinders — especially those with precision-machined 64mm+ burrs — dominate the global specialty espresso market. The clarity and brightness they produce is ideally suited to the lighter, more complex roasts that define South Africa’s growing specialty coffee culture.

A single dose grinder has no large bean hopper. Instead, you measure your exact dose (typically 14–20g) into a small loading cup or directly into the burr chamber, grind the full dose in one pass, and use every particle for that shot — with near-zero retention in the grinder.

This approach has surged in popularity in 2025–2026 for three key reasons: freshness (beans never sit in a warm hopper losing volatile aromatics), flexibility (switch between different beans or roasts without purging), and precision (you know exactly how much coffee you put in and exactly how much comes out).

The Presso DF64 Gen2 in our range adds a plasma anti-static generator — actively eliminating the static charge that causes ground coffee to clump and cling, which is a significant practical upgrade over passive anti-static features. The Eureka Mignon Single Dose Oro uses Eureka’s patented ELR System (Extremely Low Retention) with a 15° inclined grinding chamber for near-zero retention without any purge dose.

Timed dosing runs the grinder motor for a set number of seconds. At 3.7 g/s grinding speed, a 0.5 second variation means nearly 2 grams of dose variation — a massive inconsistency for espresso recipes calling for 18g ± 0.5g. This variation increases as beans change density (different roasts, different ages, different varieties) or as the motor temperature changes during service.

Grind-by-weight (GBW) uses a built-in precision scale to stop the motor at an exact target weight — typically to 0.1g accuracy. The grinder automatically compensates for all the variables that cause timed dosing to drift. The Presso W64 Enzo in our range is a GBW grinder with 0.1g precision, a 3.5-inch touchscreen, portafilter-activated hands-free dosing, and a 250-cup daily rating — used by serious South African home baristas and boutique café operators who require absolute dose consistency.

Stepped adjustment moves the burrs between a fixed number of positions — typically 10–40 steps from coarse to fine. Each step represents a relatively large burr gap change, limiting how precisely you can dial in espresso.

Stepless adjustment allows infinite micro-adjustment of the burr gap — you turn the adjustment ring smoothly and can stop at any position between two extremes. For espresso, where half a millimetre of grind size change can shift extraction time by 5–10 seconds and completely change flavour balance, stepless adjustment is essential.

Every grinder in the Coffee & Blenders SA range features stepless adjustment. This is a non-negotiable specification for any dedicated espresso grinder in 2025–2026.

Larger burrs grind faster, generate less heat per gram of coffee (preserving aromatics), and generally produce more uniform particle distributions. The industry in 2025–2026 has moved firmly toward 64mm+ flat burrs as the standard for serious espresso.

50–55mm (Eureka Mignon range, Macap Leo 55) — excellent home performance, manageable heat, compact footprint. Ideal for single-user home setups.

64mm (Presso DF64 Gen2, Presso W64 Enzo) — the dominant size in the current enthusiast market. Professional throughput, notably improved flavour clarity over 55mm.

65mm (Eureka Atom Specialty 65, Macap MI40 Touch) — professional café grade. Sustained high-volume use with the Atom Specialty’s 0.1 second precision dosing being particularly noteworthy.

As ground coffee exits the burrs, static electricity causes fine particles to clump together and stick to the grinder chute and to each other. These clumps create uneven distribution in the portafilter basket, which produces channelling during extraction — water finds paths of least resistance through the clumps, over-extracting some areas and under-extracting others.

Anti-clump chutes (standard on all Eureka Mignon models in our range) use a specially shaped exit chute that disrupts clumps mechanically as grounds exit.

Plasma anti-static generators (Presso DF64 Gen2) actively eliminate the static charge using ionised air — a fundamentally more thorough approach that addresses the root cause rather than the symptom. The DF64 Gen2’s plasma generator is one of the most talked-about grinder features in global coffee communities in 2025–2026.

The Thermomix® TM7 was launched globally in February 2025 and represents the most significant generational upgrade since the TM5. Key new features over the TM6:

10-inch multi-touch display — significantly larger and more responsive than the TM6’s screen. Searing and browning mode — the TM7 can caramelise onions, sear meat and create Maillard reactions directly in the bowl. Impossible on TM6. 45% more Varoma capacity — the redesigned Varoma holds 6.8 litres total (dish + tray), compared to the TM6’s smaller set. Quieter motor — noticeably reduced operational noise. Weekly meal planner and shopping lists — organisational tools not available on TM6. Multi-core processor — faster, more responsive interface.

Both TM7 and TM6 share built-in Wi-Fi, Cookidoo, sous-vide, slow cooking, fermentation and the same 2.2L bowl capacity.

Choose the TM7 if: Searing and browning is important to your cooking style (curries, stews, anything that benefits from initial caramelisation). You want the largest Varoma capacity and cook for larger groups. The bigger screen, quieter operation, meal planner and shopping lists add practical daily value for your household.

Choose the TM6 if: Your primary cooking is soups, sauces, baking, steaming and blending — where the TM6’s sous-vide, slow cooking and fermentation modes cover everything you need, and searing is not a priority. Budget is a consideration.

Both deliver the full Cookidoo and Guided Cooking experience. Both are available from Coffee & Blenders SA with nationwide South African delivery. Contact us and we will help you choose the right model for how you actually cook.

Cookidoo® is Vorwerk’s online guided recipe platform — the world’s largest integrated recipe library with over 100,000 recipes in 20+ languages. On the TM6 and TM7, Cookidoo connects via built-in Wi-Fi and sends step-by-step instructions — including exact temperature, speed and timer settings — directly to the machine for each recipe step.

A Cookidoo subscription is NOT required to use the Thermomix®. All core cooking functions operate fully without a subscription. A subscription is required only to access the Cookidoo recipe library. New purchases in South Africa typically include a 3–6 month free Cookidoo trial.

The TM5 requires a separate Cook-Key accessory (sold separately from Coffee & Blenders SA) to access Cookidoo via Wi-Fi. The TM6 and TM7 have Wi-Fi built in.

TM5 (2014): 12 functions, 4.3-inch touchscreen, Recipe Chip slot, Cook-Key required for Wi-Fi. No sous-vide, slow cooking or fermentation. The proven classic — excellent value for South African buyers prioritising affordability.

TM6 (2019): 20+ functions, built-in Wi-Fi, direct Cookidoo access, sous-vide, slow cooking, fermentation, egg boiler, kettle mode, 0.1g precision scales, larger touchscreen. A transformative step up from TM5 in connected cooking capability.

TM7 (2025): Everything in TM6, plus a 10-inch display, searing mode, 45% larger Varoma, quieter motor, weekly planner, shopping lists, multi-core processor, and sleek modern black design. The new flagship — the most capable Thermomix® ever made.

TM31 (2004): The original manual legend. Physical buttons and rotary dial, no screen, no Wi-Fi. Fully manual operation from printed recipes. Legendary durability — many South African TM31s are still in daily use after 20 years.

The Thermomix® replaces more than 20 separate kitchen appliances — blender, food processor, scales, steamer, slow cooker, sous-vide machine, rice cooker, stand mixer, saucepan, whisk, fermentation device, egg cooker, kettle and more. For South African households already owning several of these, the replacement value frequently exceeds the Thermomix® price.

Beyond replacement value: the Thermomix® saves significant daily time (no monitoring, stirring or watching pots), reduces cooking stress for weeknight meals through Guided Cooking, dramatically expands what you can cook at home (reducing reliance on takeaway and restaurant meals), and helps South African families eat healthier by making scratch cooking genuinely accessible every day.

The overwhelming consensus from South African Thermomix® owners is that it is one of the best single kitchen investments they have made — with many reporting that they use it every day for years.

Under-extraction — water passes through coffee too quickly (short shot time). Tastes sour, sharp, thin, acidic, watery or grain-like. The shot runs pale or blonde early. Causes: grind too coarse, dose too low, temperature too cool, tamping too light.

Over-extraction — water passes through coffee too slowly (long shot time). Tastes bitter, harsh, dry, ashy, hollow or astringent. Causes: grind too fine, dose too high, temperature too hot, tamping too hard.

The fix is almost always grind size first: Coarser grind → faster shot → reduces bitterness. Finer grind → slower shot → reduces sourness.

Target: A 36–40g double espresso from an 18g dose in 25–32 seconds at 9 bar pressure. This is the starting point — adjust from taste, not from dogma.

Pre-infusion wets the coffee puck with low-pressure water (1–3 bar) before full extraction pressure (8–9 bar) builds. This allows the coffee grounds to swell and hydrate evenly across the full diameter of the puck, reducing dry spots and the formation of channels — preferential flow paths through the puck where water bypasses much of the coffee, causing simultaneous over- and under-extraction in the same shot.

For most South African home baristas, pre-infusion (even the simple mechanical kind built into the Gaggia Classic and most Lelit machines) visibly improves espresso quality and reduces the sensitivity of a recipe to small variations in distribution and tamping technique.

On the Lelit Bianca V3, pre-infusion is manually controlled via the flow paddle — giving the barista full control over duration, flow rate and ramp profile, turning pre-infusion from a background function into one of the most powerful tools for flavour development in modern home espresso.

A cup of coffee at a South African café costs R40–R60. A double espresso made at home with premium specialty beans costs approximately R4–R8 per cup (beans only — the machine and grinder are amortised over years of use).

One person, one cup per day: Café cost R18,250/year vs home cost R1,825–R2,920/year. Annual saving: R15,000–R16,400.

Two-person household, two cups per day: Annual saving: R30,000–R33,000.

A R15,000 home espresso setup (Lelit Anna PID + Lelit Fred 44 grinder) pays for itself in under 12 months for a single daily coffee drinker. A R25,000 setup (Lelit Mara X + Eureka Mignon Specialita) pays for itself in under 18 months. After payback, every cup is pure financial saving.

The most common regret in home espresso communities globally in 2025–2026 is buying an underpowered entry-level machine, becoming frustrated with the quality ceiling, and upgrading within 12–18 months — effectively paying twice. A sub-R2,000 consumer espresso machine with a pressurised basket cannot replicate what a genuine Italian machine with a commercial group head and proper 9-bar pump delivers.

The honest minimum for genuine home espresso: A machine with a commercial 58mm group head, a vibration pump delivering 9 bar, and a proper portafilter system. The Gaggia Classic E24 is the lowest price point at which this specification is met in our range.

If budget requires a lower entry point, the Gaggia Espresso Evolution is a legitimate starting machine that produces quality espresso. But if you can stretch to the Gaggia Classic E24 or Lelit Anna PID, do so — you will not outgrow either machine for years.

Genuine products: Every machine and grinder we sell is a genuine product sourced from its Italian manufacturer. No grey imports, no warranty complications, no substitutes.

Specialist knowledge: We understand every product in our range at a technical level. We can guide you to the right grinder for your specific machine, explain the practical differences between HX and dual boiler in terms that translate to your actual morning coffee routine, and advise on the right Thermomix® model for your cooking style.

Complete range, one destination: From a R5,000 beginner machine to a R120,000 flagship lever machine, from a compact home grinder to a 300-cup-per-day commercial setup, from the TM31 to the TM7 — one specialist South African retailer for all three categories.

Nationwide delivery: All 9 provinces, every major city, plus 7 neighbouring countries across Southern Africa.

Recommended pairings by budget level, all available from Coffee & Blenders SA:

Entry level (R10,000–R18,000 combined): Gaggia Classic E24 + Lelit Fred 43 or Lelit Fred 44. Genuine Italian quality at an accessible price, with room to grow as your barista skills develop.

Mid range (R25,000–R40,000 combined): Lelit Mara X + Eureka Mignon Specialita (programmable, anti-clump, silencer). A heat exchanger machine with Eureka’s most celebrated home grinder — this combination is used by serious home baristas across South Africa and globally.

Enthusiast (R45,000–R70,000 combined): Lelit Bianca V3 + Presso W64 Enzo (grind-by-weight). Flow control on the machine, precision 0.1g dosing on the grinder — the complete tool set for South African baristas who want to explore espresso at its absolute highest level without going commercial.

Commercial / high volume: Wega Orion (gas heating option) + Macap MI40 Touch (300 cups/day, access control, cooling fan). The complete South African café solution, load-shedding resilient.