How To Make Beurre Noisette
To make beurre noisette, you first need to clarify butter. Heat 6 tablespoons (3 ounces) unsalted butter in a small heavy saucepan over very low heat, watching carefully to prevent burning. (You may need to move any foam on the surface aside to check the progress.) For clarified butter, remove the pan from the heat when the liquid on top is clear and the white solids are resting on the bottom. For beurre noisette, keep the butter on the heat until the milk solids turn a deep brown. For either method, immediately pour the butter through a fine-mesh strainer or a strainer lined with cheesecloth into a heatproof cup.