A puck-preparation routine should produce the same result twice. If it requires five tools and you change the order every morning, it is hard to know which step helps and which one merely looks careful.
Begin with the basket, not the tamper
Remove old grounds and dry the basket. Check that the holes are clear and that the basket is seated properly. Use a dose within its intended range. Overfilling to get a slower shot can create contact with the shower screen; underfilling a large basket introduces another variable. Consult the machine and basket guidance for headspace.
Weigh the ground dose, rather than assuming the grinder delivered what you put into it. Use a funnel if it prevents spills, but do not let it become a reason to overfill. Coffee left on the rim can interfere with a clean seal.
Distribute before tamping
Break up visible clumps and spread the grounds through the basket, including near the edges. Weiss distribution technique uses thin needles to move through the coffee before tamping. If you use it, work through the depth of the bed gently; a quick swirl over the surface does not redistribute the coffee below.
A proposed comparison is more useful than buying another tool: keep dose, grinder setting and yield fixed, then make two shots with your usual routine and two with careful needle distribution. Record taste and whether flow is more repeatable. This is a home test you can perform, not a claim that this publication measured an improvement.
Tamp once, with the basket supported
Keep the tamper level. Support the portafilter so it does not rock, and press evenly to form a stable bed. Do not add a harder second tamp as an extraction adjustment. Once the puck is compressed, repeatedly tamping and knocking the side of the basket adds actions without giving you a reliable new recipe.
Brush stray grounds from the rim. Insert the portafilter without banging it against the group, then brew. If you accidentally disturb the puck, note it in the log rather than using that shot to judge a grinder change.
Know what the routine cannot fix
Good preparation does not rescue a blocked basket, unsuitable grind or beans you dislike. A dark patch or crack in a spent puck is not enough to calculate extraction. If you have a bottomless portafilter, use the flow as supporting evidence, then taste the drink.
Keep the routine to five checks: clean and dry basket, weighed dose, even distribution, level tamp, clean rim. Add a screen or another distribution tool only to solve a specific problem. It should make the routine easier to repeat, not turn every shot into a demonstration.
