Sauce Noisette

The science

Beurre noisette — "hazelnut butter" — is butter cooked until its milk solids toast and turn brown, developing nutty, caramelized Maillard aromas (the "noisette" refers to the hazelnut-like color and scent, not to actual nuts). Building the emulsion with this browned butter threads those toasty notes through the Hollandaise. The technique requires care: the butter must be browned and then used while warm and fluid, and because brown butter carries its (toasted) milk solids, the cook balances flavor against the slight loss of the pure-clarified butter's stability.

Flavor profile

Hollandaise made with beurre noisette (brown butter) in place of standard clarified butter.

Culinary uses

Poached fish, eggs, and vegetables wanting a deeper, nuttier butter character than plain Hollandaise.

Reference notes

Parent: Hollandaise. Technique: beurre noisette (brown butter) / Maillard browning of milk solids. Compare to plain clarified-butter Hollandaise to teach how the butter treatment alone forks a derivative.

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