microfoam
nounUK /ˈmʌɪkɹə(ʊ)fəʊm/
Etymology From micro- + foam.
1
Foam consisting of very small bubbles, specifically as an element in the steamed milk used to make certain types of latte coffee.
- When a barista steams the milk for a cappuccino, microfoam is created by introducing very tiny bubbles of air into the milk, giving the milk a velvety texture and sweetness.2009, Roseane Santos, An Unashamed Defence of Coffee, page 188: