Scharffen Berger Chocolate Maker Co-founder Robert Steinberg developed this recipe, but when the brownies came out of the test kitchen oven, they didn’t have their usual glossy, crackled top and fudgy texture. The Essence of Chocolate (Hyperion, 2006) cookbook crew asked Robert to make the brownies while they watched. We realized that an electric mixer doesn’t work for this recipe. The batter must be beaten by hand until it pulls from the sides of the bowl. This sounds like a task but it’s not; there’s something homey and satisfying about stirring this thick, glossy batter yourself.