Espresso
OutIn Nano 2 Portable Espresso Machine
A pocket-sized espresso maker with a bigger battery, faster charging, and a stronger 21-bar pump than the original Nano.
Independent Testing Since 2021
Brew smarter, not harder.
We buy, bench-test, and score every espresso, drip, pod, and cold brew machine we can get our hands on — so your next machine earns its spot on the counter.
Better Coffee Starts Here
This month’s Top Picks
View all reviews
How We Test
Every machine earns its rating on the bench, not the spec sheet.
Each unit is run through the same routine — dozens of brew cycles, cleaning tests, and a blind taste panel — before it gets a single star.
Read our testing method
01
Unbox & calibrate
Every machine ships and sets up exactly as a reader would receive it.
02
Brew for weeks
Daily use across roast types, grind sizes, and cleaning cycles.
03
Score & publish
A transparent rubric, published alongside every review.
Not sure where to start?
Our buying guide walks through budget, brew style, and counter space in about five minutes.
Open the Buying Guide