Dialling in espresso does not need to start with guesswork. You need a repeatable starting recipe, a scale if possible, and a willingness to change one variable at a time.
This guide is written for OCT92 Coffee, our medium-roast specialty Arabica blend with caramel sweetness, dark chocolate depth, low perceived acidity and full body. Your machine, basket, grinder and water will affect the result, so treat the numbers below as a starting point rather than a rule.
A simple starting espresso recipe
Try:
- Dose: 18g coffee
- Yield: about 36g espresso
- Ratio: roughly 1:2
- Time: around 25–30 seconds from pump start as an initial reference
If your basket is designed for a different dose, use the basket’s sensible working range and keep the same approximate 1:2 ratio to begin with.
Step 1: get the dose consistent
Use the same dry coffee dose each time. If one shot uses 17g and the next uses 19g, it becomes difficult to know whether a change in taste came from grind size or dose.
Distribute the grounds evenly, tamp level and keep your preparation routine repeatable.
Step 2: adjust grind to control flow
Grind size is usually the easiest variable to use for dialling in.
If 36g of espresso arrives much too quickly and the shot tastes thin, sharp or sour, grind finer. If the shot takes much too long and tastes harsh, dry or bitter, grind coarser.
Make small adjustments. Large grinder changes can move you straight past the useful range.
Step 3: taste before chasing a stopwatch
Shot time is a diagnostic tool, not the goal. A coffee that tastes excellent at 24 seconds is more useful than one that tastes unpleasant at exactly 30 seconds.
With OCT92, you are looking for a rounded cup where caramel sweetness and dark-chocolate depth are clear, the body feels full and the finish stays smooth.
If the espresso tastes sour
A sour or very sharp shot is often under-extracted. Try one of these changes:
- grind a little finer
- increase the yield slightly
- check that the machine is fully heated
- make sure the shot is not channeling because of uneven puck preparation
Change one thing, taste again, then decide whether to continue.
If the espresso tastes bitter or dry
A harsh, dry or overly bitter shot may be over-extracted. Try grinding slightly coarser or shortening the yield a little. Also check that your machine is clean; old coffee oils can add unpleasant bitterness that has nothing to do with the beans.
Milk drinks
For flat whites, cappuccinos and lattes, a slightly more concentrated espresso can help the coffee stay present through milk. You might prefer a yield a little below 1:2, then adjust based on sweetness and balance.
The full-bodied, chocolate-forward profile of OCT92 is intended to work comfortably both black and with milk.
Keep a simple dial-in note
Write down dose, yield, time and one sentence about taste. Something as simple as “18g in, 36g out, 27 sec — sweet, balanced” gives you a reference the next morning.
If humidity, bean age or grinder retention changes the flow, you can then make a small correction instead of starting again.
Using OCT92 in other brewers
Espresso is only one way to brew the blend. OCT92 also works with filter, AeroPress and cafetière. See our medium-roast brewing guide for the broader approach, or visit the OCT92 Coffee FAQ for product details.
Quick dial-in checklist
Start around 1:2, keep the dose consistent, adjust grind first, taste the result and change one variable at a time. The target is not a perfect number on paper; it is a repeatable espresso that tastes sweet, full and balanced in your cup.