
Unsalted butter is a dairy fat churned from cream, made without added salt.
Sweet cream dominates, clean and mild, with a soft milky richness and no saline edge.
Reached for when a drink is to be enriched or served hot, it is melted into warm builds or worked in to add body and a rounded mouthfeel; used in small amounts so the fat carries flavour without splitting the drink.
Salted butter, adjusting for its added salt, or clarified butter where a pure fat is wanted.
Cream is agitated until its milkfat separates from the buttermilk and coalesces into a solid; the unsalted form omits the salt that is otherwise added for seasoning and preservation, leaving fat, water and milk solids.
Refrigerate to keep it fresh, as the fat absorbs odours and turns rancid over time; freeze for longer holding.