To brown butter
Melt your butter in a saucepan with a light colour to see how well the butter is browning. Melt over a low heat and swirl the pan occasionally to be sure the butter is cooking evenly. As the butter melts, it will begin to foam. The color will progress from lemony-yellow to golden-tan to, finally, a toasty-brown. Once you smell that nutty aroma, take the pan off the heat and transfer the browned butter into a heat-proof bowl to cool. Strain through a cheesecloth to remove as much of the cooked milk solids as possible.