Why Track Your Espresso?

Most home baristas go through the same cycle: buy beans, spend a week dialling in, finally pull great shots, finish the bag, buy new beans, start from scratch. All that hard-won knowledge disappears because it was never written down.

Tracking your shots breaks this cycle. When you have a record of what worked (and what did not), you stop guessing and start building on past experience. The result is less wasted coffee, faster dial-in and more consistently great espresso.

The Essential Variables

At minimum, log these five things for every shot:

1. Dose (g)

The weight of dry coffee in your portafilter. This is your input. Most home baristas work with 16–20g, with 18g being the most common.

Why it matters: Dose affects extraction resistance and concentration. Even a 0.5g change can shift your shot's flavour.

2. Yield (g)

The weight of liquid espresso in your cup. This is your output. Together with the dose, it gives you your brew ratio.

Why it matters: The yield determines how much you extract from the grounds. It is the main lever for adjusting flavour balance between sour and bitter.

3. Time (s)

How long the shot takes from pump start to target yield. Typically 25–35 seconds for a standard espresso.

Why it matters: Time is the result of your grind size and dose. It tells you whether water is flowing through the puck at the right rate. A sudden change in time without changing the grind can indicate stale beans, humidity changes or channelling.

4. Grind Setting

Your grinder's numeric or notch setting. If your grinder is stepless, note the position as precisely as you can.

Why it matters: This is the variable you will adjust most often. Without logging it, you are relying on memory and the markings on your grinder, which are often imprecise.

5. Rating

A simple taste score. Use whatever scale you like. Out of 5, out of 10, thumbs up or down. The key is consistency.

Why it matters: Rating is the variable that ties everything together. It tells you whether your adjustments are moving in the right direction. Without a rating, your log is just numbers. With a rating, it is actionable data.

Puck Yeah's shot wizard captures all five of these in under 15 seconds with a guided step-by-step flow. You can also use Quick Log mode to enter everything on a single screen when you already know your parameters.

Going Deeper: Optional Variables

Once you are comfortable logging the basics, additional data points add value:

Bean Information

Roaster and name: So you can compare performance across different beans.
Roast level: Light, medium, dark or a more specific level if your roaster provides one.
Roast date: Freshness changes how coffee extracts. Tracking roast date lets you see if your best shots cluster around a specific age window.
Origin and process: Over time, you might discover you prefer washed Ethiopians at 1:2.5 but natural Brazils at 1:1.8.

Puck Yeah's Bean Library stores all of this for each bean. When you log a shot, you select the bean from your library and the app automatically tracks freshness, average rating and shot count for every bag.

Tasting Notes

Even a few words ("sour", "balanced", "chocolate", "bright") help you remember what the shot actually tasted like. Numbers alone do not capture the full picture.

The Coffee Taster's Flavour Wheel (developed by the Specialty Coffee Association and World Coffee Research) provides a shared vocabulary, but plain language works just as well. If it tasted like blueberries, write "blueberries."

Equipment Details

Machine: Relevant if you have access to multiple machines (home and office, for example).
Basket size: Some baristas switch between 15g, 18g and 20g baskets.
Water temperature and pressure: If your machine lets you adjust these, they are worth logging.

Puck Yeah's Equipment Loadouts let you name your machine and grinder pairings (like "Office Setup" or "Home Rig") and switch between them with a tap. Your loadout is attached to each shot so you can compare performance across different setups.

Puck Prep Notes

Did you use a WDT tool? A leveller? A calibrated tamper? Notes on your preparation help diagnose channelling issues if they appear in your data.

What Patterns to Look For

Your Sweet Spot Grind Range

After 20–30 logged shots, filter by your highest-rated shots. You will likely see them cluster around a narrow grind range. This is your grinder's sweet spot for your current bean. A range you can dial into quickly with new bags.

Puck Yeah's Jarvis AI does this analysis for you. It identifies your grind sweet spot per bean and can suggest a starting grind when you switch to similar coffee.

Bean Freshness Windows

Plot your ratings against days since roast. Most beans have a peak window (often 10–21 days post-roast) where they taste best. Knowing this helps you time your purchases.

Ratio Preferences by Roast Level

Compare your best ratios for light versus dark roasts. Many home baristas discover they prefer longer ratios (1:2.2 to 1:2.5) for light roasts and shorter ratios (1:1.5 to 1:2) for dark roasts. Once you see this pattern in your own data, you can start new beans closer to the right ratio.

Time-of-Day Effects

Some baristas notice they make better espresso in the morning (fresh palate, more focus) versus the afternoon. If your ratings dip after 3pm, it might be palate fatigue rather than a machine problem. Puck Yeah's brewing heatmap shows when you pull your best shots across the day and week.

Grinder Drift

If your shots gradually become sour over the course of a week without changing the grind, your beans are ageing and becoming less soluble. The data makes this visible immediately.

Analogue vs Digital Tracking

The Notebook Approach

A paper journal works. It is immediate, tactile and does not need charging. But it has limitations: you cannot sort, filter or graph your data. Spotting trends across 100 shots in a notebook requires serious effort.

Spreadsheets

A step up from paper. You can sort and filter, build charts and calculate averages. But logging in a spreadsheet while pulling shots is fiddly, especially on a phone with coffee grounds on your hands.

Dedicated Apps

Purpose-built espresso tracking apps solve both problems. They are designed for fast logging (dose, yield, time, grind, rating), automatic ratio calculation, trend charts and bean management. The best ones let you see your patterns without any manual analysis.

Puck Yeah was built specifically for this. It takes under 15 seconds to log a shot, automatically calculates your brew ratio and surfaces trends across your shot history. Your bean library tracks roast dates and origins so you can compare performance across different coffees over time. And the Jarvis AI assistant analyses your data to give you personalised dial-in advice, daily challenges and pattern recognition that gets smarter the more you use it.

How Much Data Do You Need?

You do not need to log shots for months before seeing value. Most baristas notice useful patterns within the first two weeks:

5 shots: Enough to find the right grind ballpark for a new bean.
15 shots: Enough to see your preferred ratio and typical time range.
30 shots: Enough to compare across beans and identify your taste preferences.
100+ shots: A rich dataset that reveals seasonal patterns, grinder drift and long-term improvement trends.

The key is consistency. A short, complete log for every shot is far more valuable than detailed notes on some shots and nothing on others.

Getting Started

If you have never tracked your espresso before, start simple:

1.Log dose, yield, time, grind and rating for your next 10 shots.
2.After 10 shots, review: which had the highest ratings? What did they have in common?
3.Use that information to dial in your next bag faster.

You will be surprised how quickly patterns emerge and how much less coffee you waste once you stop guessing. Puck Yeah is free, works offline and requires no signup. Open the app and start logging your first shot right now.

What to track in your espresso journal (and why it matters)