Beurre noisette

Beurre noisette is a rich brown sauce with a slightly nutty flavor, often used for making desserts and pastries. It is usually a welcome addition to various main courses, especially those with seafood. The sauce is also known as brown butter or hazelnut butter, although it contains no hazelnuts.

It is made by melting and browning (ideally, unsalted) butter for a precise period of time, otherwise it would burn and become inedible. Beurre noisette is commonly poured over vegetables or pasta dishes, but it also imparts a toasty flavor to pastries and helps them bake and brown evenly.