Over low heat, warm a small saucepan or frying pan.
Add 3 large tablespoons (or desired amount) of unsalted butter to the pan.
Gently swirl the pan as the butter begins to melt.
Cook until the white milk solids have browned*, about 3-4 minutes, and the butter has taken on a deep golden color and has a nutty fragrance.
*(First, the solids will bubble at the top into white foam and then will settle on the bottom like little brown specks).