Professional Barista Course

Professional Barista Course

For baristas who are already working or want to start

This course is for those who are past their first espresso. You already work in a coffee shop or want to seriously learn the barista profession — not just for home use. You treat coffee as a profession, not a hobby.

We won't tell you "what espresso is." We'll tell you how to calibrate, how to diagnose a defective shot, how to build a staff training program, and how to operate a bar workflow at 100 drinks/hour.

It's free. Read it at your own pace. At the end, if you want to attend the physical course, you can sign up — we organize sessions when we have groups of 4-6 people.

Table of Contents

  1. Espresso: A Deep Understanding
  2. Grinder and Machine Calibration
  3. Sensory Diagnosis — Under-extraction vs. Over-extraction
  4. Milk: Aeration, Texture, Latte Art
  5. High-Volume Bar Workflow
  6. Bar Water — TDS, Mineralization
  7. Cupping and Lot Evaluation
  8. Professional Equipment Maintenance
  9. Customer Communication
  10. Training for New Baristas
  11. Building a Menu
  12. Coffee Shop Business — Financial and Operational
  13. Recommended Professional Equipment
  14. Professional Physical Course

Module 1 — Espresso: A Deep Understanding

Espresso is the art of extracting 25-30% of the coffee mass in 25-30 seconds, under 9 bar pressure, at 92-94°C, through 18-20g of very finely ground coffee. Every variable matters.

The 7 variables

  1. Dose — 18-20g, measured with a 0.1g scale, NOT with a spoon/basket.
  2. Yield — how much coffee comes out in the cup. Typically 36-40g (ratio 1:2 to 1:2.2).
  3. Time — 25-30 seconds from the moment the first drop appears.
  4. Grind size — very fine, but adjusted daily based on ambient conditions.
  5. Pressure — standard 9 bar. Modern machines have 1-3 bar pre-infusion to balance the puck.
  6. Temperature — 92-94°C. Hotter = more bitter. Colder = more acidic.
  7. Water TDS — 75-150 ppm ideal. Below 50 = weak extraction. Above 250 = scale buildup and bitterness.

Recipe template

Variable Light-medium roast coffee Medium roast coffee Medium-dark roast coffee
Dose 19-20g 18-19g 17-18g
Yield 40-42g (1:2.1) 36-38g (1:2) 32-34g (1:1.8)
Time 28-32s 25-28s 22-26s
Temp 94°C 93°C 92°C

Module 2 — Daily Calibration

A machine calibrated yesterday is NOT calibrated today. Humidity, atmospheric pressure, the coffee batch (even the same one), freshness — all change the ideal point.

Daily Calibration Protocol

  1. First coffee of the day — dose, yield, time. Compare with the standard recipe.
  2. If the yield is wrong: adjust grind size (finer to slow down, coarser to speed up).
  3. If the time is wrong: recheck grind size.
  4. If everything is within specs but the taste is off: check temperature, water, coffee freshness.
  5. Recalibrate with each new batch (even if it's the same blend).
  6. Recalibrate after major weather changes (humidity, pressure).

Module 3 — Sensory Diagnosis

Understanding why a shot isn't good is more important than being able to make it perfect the first time. In modern specialty coffee, every barista must be able to evaluate taste and adjust variables accordingly.

Under-extraction

  • Taste: acidic, bland, "thin." Jumps on the tongue.
  • Cause: grind too coarse, dose too small, time too short, temp too low.
  • Fix: grind finer, increase dose, increase temp.

Over-extraction

  • Taste: bitter, flat, "drying." Astringency.
  • Cause: grind too fine, dose too large, time too long, temp too high.
  • Fix: grind coarser, decrease dose, decrease temp.

Channeling

  • Visible: side jet or dark spot on the puck after extraction.
  • Cause: uneven distribution, crooked tamping, "fissured" puck.
  • Fix: careful distribution (WDT), level tamping.

Module 4 — Milk: Aeration, Texture, Latte Art

Quality milk makes the difference between a good cappuccino and a memorable one. The technique involves mechanical and sensory cleanliness.

Steps for perfect milk

  1. Cold milk from the fridge (4-6°C).
  2. Clean and cold pitcher. Use a 350ml pitcher for 1 cappuccino, 600ml for 2.
  3. Purge the steam wand before inserting it into the milk. Clean the condensation.
  4. Stretch (aeration): tip of the wand just below the milk surface, listen for a "kss-kss" sound. Max 3-4 seconds — you don't want stiff foam.
  5. Texture (rotation): the wand is submerged in the pitcher, creating a vortex. The milk is round in the pitcher, with a silky cream.
  6. Stop at 60-65°C. Hotter = burnt milk, cardboard taste.
  7. Tap pitcher on the counter 2-3 times to break large bubbles. Swirl gently.

Latte art basics

Latte art is a consequence of well-textured milk. If the milk has bubbles, no heart will emerge. Basic types:

  • Heart — easiest. Pour high, then play low with opposing river.
  • Rosetta (leaf) — lateral wiggling while pouring high.
  • Tulip — multiple vertical impulses, each overlapping the previous one.
  • Swan / Phoenix — advanced, combination of techniques.

Practice at least 1 milk drink/day (with good milk) for 60 days to reach a professional competence level.

Module 5 — High-Volume Bar Workflow

A busy coffee shop makes 100-200 drinks/hour. Without an optimized workflow, you'll fall into chaos. With a good workflow, you'll even have time to be charming with customers.

Workflow Principles

  • Grind before receiving the order. As soon as you greet the customer. Not when they've paid.
  • Steam milk in parallel with extraction. You have 25-30 seconds, use them.
  • Clean the steam wand immediately after each milk. If you wait 30 seconds, the milk dries and it's a disaster to clean.
  • Purge the group after each shot. 2-3 seconds, essential for consistency.
  • Accessible knock box. DO NOT leave pucks on the counter — they make it look dirty.
  • Multiple pitchers. Have 3-4 in rotation — never reuse an unwashed one.

Ergonomic Setup

  • Grinder 30cm to the left of the machine.
  • Tamper permanently above the basket.
  • Preheated cups on top of the machine.
  • Milk in the fridge under the bar, accessible with one hand.
  • Knock box to the right of the machine.

Module 6 — Bar Water

Water is 98% of the drink. If the water is bad, the rest doesn't matter.

Parameters

  • TDS (total dissolved solids): 75-150 ppm for espresso, 100-150 ppm for filter.
  • GH (general hardness): 50-100 ppm calcium carbonate.
  • KH (carbonate hardness): 40-70 ppm — too high = scale buildup on the boiler.
  • pH: 6.5-7.5 (neutral).

Solutions

  • BWT bestmax or equivalent — professional system for the bar.
  • Brita Purity or Cuno — alternatives.
  • Aqua Carpatica water directly is NOT suitable — TDS too high (~700 ppm), creates rapid scale buildup.

Module 7 — Cupping and Lot Evaluation

Cupping (structured tasting) is how coffee lots are evaluated before being made into espresso at the bar. The SCA Cupping Protocol is the global standard.

SCA Cupping Protocol

  1. 8.25g coffee ground into a standard 150ml cup.
  2. 150g water at 93°C poured over the coffee.
  3. Wait 4:00 minutes. A crust forms.
  4. Break the crust with a spoon 3 times — evaluate aromas.
  5. Let cool for 8-10 minutes.
  6. Slurp on a spoon every 2-3 minutes, up to 30 min.
  7. Note on the cupping form: Fragrance/Aroma, Flavor, Aftertaste, Acidity, Body, Balance, Overall.

Module 8 — Professional Equipment Maintenance

Professional equipment requires regular maintenance. Without it, quality quickly declines.

Daily Maintenance

  • Empty backflush after each shot (hot water through the group).
  • Backflush with Cafiza at the end of the day.
  • Clean portafilters.
  • Clean the steam wand with a damp cloth.

Weekly Maintenance

  • Change group gaskets if worn.
  • Clean the grinder with Grindz tablets.
  • Clean the boiler of scale.

Module 9 — Customer Communication

A good barista doesn't just make coffee. They educate the customer, explain when needed, and confidently recommend.

Basic Rules

  • Use the customer's language. If they talk about "strong coffee," don't correct them with "extraction."
  • Make recommendations. "Today we have a very interesting Ethiopian — sweet, citrusy, perfect for filter."
  • Explain when you have time. Not in a rush, but if it's calm and the customer asks — tell the coffee's story.
  • Never criticize the customer's taste. If they want coffee with sugar, that's their right.

Module 10 — Training for New Baristas

If you're a head barista or owner, you'll train new baristas. This requires structure and patience.

Training Program (8 weeks)

  • Week 1: Espresso basics. 50 shots/day, supervised. Fixed recipe.
  • Week 2: Calibration and diagnosis. Identify under-extraction vs. over-extraction.
  • Week 3: Milk basics. Cappuccino + latte "simple" drinks.
  • Week 4: Latte art basics. Heart.
  • Week 5: Workflow. Combining espresso + milk in parallel.
  • Week 6: Cupping. Identify 5 origins.
  • Week 7: Customer communication. Role-play.
  • Week 8: Independent — solo shifts, distant supervision.

Module 11 — Building a Menu

How do you decide what to keep and what to remove from the menu?

Classic Categories

  • Espresso-based — espresso, americano, lungo
  • Espresso + milk — cappuccino, latte, cortado, piccolo
  • Specialty drinks — flat white, mocha, etc.
  • Filter — V60, Chemex, AeroPress, French Press (2-3 methods max)
  • Cold — cold brew, iced latte, frappé
  • Signature drinks — 1-3 unique drinks of the coffee shop

Rules

  • No more than 12-15 drinks. Too many items = operational inefficiency + confused customers.
  • 1-2 single-origin options for filter/espresso. Not 10. Weekly rotation.
  • Round prices (12, 15, 18 RON — not 12.50). Easier at the register.

Module 12 — Coffee Shop Business

If you want to open your own coffee shop or manage one, you also need to understand the financial aspects.

Product Cost (per coffee)

  • Green coffee: 50-100 RON/kg (specialty), approximately 1-2 RON/shot
  • Milk: 6-10 RON/liter, ~0.5-1 RON/cappuccino
  • Cup / take-away cup: 0.5-1.5 RON
  • Total direct cost: 3-5 RON/cappuccino
  • Selling price: 12-15 RON/cappuccino
  • Gross profit: 60-70% per drink

Operational Costs

  • Staff: 30-40% of sales.
  • Rent + utilities: 10-20%.
  • Green coffee + ingredients: 25-30%.
  • Equipment maintenance: 2-5%.
  • Net profit: 10-20% (decreasing when rent increases or traffic decreases).

Bonus — Professional Equipment

The list is not sponsored. These are brands I've seen working in specialty coffee shops in Bucharest, Berlin, London.

Professional Espresso Machines

  • La Marzocco Linea Mini / GS3 — global specialty benchmark.
  • Slayer Espresso V3 — programmable pre-infusion, extreme control.
  • Synesso S-Series — robust, widely used in the USA.
  • Victoria Arduino Eagle One — energy-efficient, modern design.

Professional Grinders

  • Mahlkönig EK43 — global standard for filter/single-dose.
  • Mahlkönig E80 or K30 — for espresso, on-demand.
  • Mythos 2 — grinding temperature control.

Professional Physical Course

If you've read and understood, you're ready for the professional physical course. What's included:

  • Professional Barista Physical Course at Incognito — 12-16 hours (2 days), very small group (3-4 people), all hands-on with our machine + professional grinders.
  • Practical cupping with 5-6 active origins.
  • Calibration with Vlad — one-on-one hour with analyzed shots.
  • Business discussions if you're interested in opening your coffee shop or becoming a head barista.

Price: variable, depends on the program (check with us). We organize sessions when we have 3-4 confirmed participants.

Write to us at [email protected] with "Barista Profesional" in the subject.

This course was written by the Incognito Coffee team. The freshly roasted coffee we use as an example: /collections/all. For beginners, see Home Barista Course.