How fresh should espresso beans be?

Best between 7 and 21 days off roast. Very fresh coffee gasses heavily and produces gushing, uneven shots.

Do I need a bottomless portafilter?

Not required, but it's the cheapest diagnostic tool available — channelling becomes instantly visible.

Your First Month With a Home Espresso Machine

Espresso 11 min read Updated July 25, 2026By Daniel Ferro

Espresso punishes inconsistency more than any other method. The good news is that almost every beginner problem traces back to three variables, and you can learn to move them one at a time.

Start from one recipe

18g in, 36g out, 25 to 30 seconds. Write it on a sticky note and put it on your machine. Every adjustment you make from here is measured against that baseline.

Weigh the shot in the cup. Volume lies — crema varies wildly between roasts and ages.

Dialing in without losing your mind

Change one thing at a time, and only grind size on day one. Shot running under 20 seconds and tasting sour? Grind finer. Over 35 seconds and tasting harsh and ashy? Grind coarser.

Expect to waste three or four shots per new bag of coffee. That's normal, and it's cheaper than a café habit.

Puck prep is the quiet variable

Distribute the grounds evenly before tamping — a WDT tool made from a cork and acupuncture needles costs almost nothing and eliminates channelling.

Tamp level rather than hard. Consistency of angle matters far more than pressure once you're above roughly 30 pounds.

What to ignore for now

Pressure profiling, naked portafilter forensics, bottomless flow analysis and water chemistry. All useful eventually, all noise while you're still learning to hit a repeatable 36g.

Buy a decent burr grinder before upgrading the machine. It is, without exaggeration, the highest-leverage purchase in espresso.