Cold Foam

Cold foam is made without heat — typically by blending non-fat milk at high speed until it triples in volume and holds its shape — then spooned or poured over an iced drink so it sits as a distinct white layer rather than melting in. It became a fixture of American coffee menus after Starbucks popularized it in 2018, and Brooklyn specialty shops have adapted the technique with higher-quality milks and oat-milk alternatives. The textural contrast — cold, slightly aerated foam over ice — is the appeal; expect the foam layer to last a few minutes before folding into the drink below.