THE SHORT ANSWER
For a capable espresso setup, start with an appropriate basket dose and a repeatable grind, then measure the finished shot. A 1:2 dry-coffee-to-beverage ratio is a common starting experiment: 18 g coffee producing about 36 g espresso, if your basket suits 18 g.
Read your equipment first
Basket capacity, machine temperature controls and grinder capability vary. Follow the manufacturer’s instructions and do not force an oversized dose into a small basket. A scale and a simple notebook are useful because a shot’s visual volume changes with crema.
Prepare a repeatable bed
Grind fresh, distribute the grounds evenly and tamp level. Lock the portafilter securely and brew according to the machine’s instructions. Note dose, beverage weight, time and taste. Resist changing every setting after the first imperfect attempt; you need a stable baseline before the adjustments mean much.
Dial in by small steps
A fast, sour shot can suggest a finer grind; a slow, bitter shot can suggest coarser. These are clues rather than universal laws. Check for uneven flow and cleanliness too. If the grinder cannot make repeatable fine adjustments, a different basket or a concentrated coffee made with another brewer may be more satisfying. A moka pot can make excellent coffee, but it is not identical to pump espresso.
Change one thing, taste, and keep a short note. A recipe becomes useful when you can repeat the cup you enjoy.
Try it for yourself
Sources & further reading
Source links support the factual context. Our home recipes and tasting suggestions are identified as starting points.