For the Brown Butter: heat a stick of butter over medium-high heat. It will start to bubble and fizz. Stir regularly so the milk solids brown evenly. Take the butter as dark as you feel comfortable. At MilkBar, we would take the butter super dark and nearing burnt. Once the butter is where you like it, pour into a heat safe container and allow to cool at room temperature, stirring every half hour or so to evenly distribute milk solids.