The ratio that fixes 90% of bad home lattes
Most people who "can't get their milk right" at home aren't messing up the steaming — they're messing up the ratio.
A shop-quality latte is roughly 1 part espresso, 2 parts steamed milk, with about a centimeter of microfoam on top. That's it. If your drink tastes like a mug of hot milk with a coffee aftertaste, you're pouring too much milk relative to your shot. If it tastes harsh and thin, you're under-pouring.
The other fix nobody tells you: stop steaming milk to a rolling boil. Stick your thumb on the side of the pitcher — once it's too hot to comfortably hold (around 140-150°F), stop. Boiled milk tastes scorched and kills the sweetness you're trying to pull out of it.
Spent the last few months writing down the exact ratios and steps for 30 drinks like this — lattes, cortados, cold brew, a few less common ones — as a PDF guide. No vague "steam until frothy" instructions, just numbers. If that's useful to anyone, it's up in Barista Lab.
