Pamela Moxley, the pastry chef at Miller Union in Atlanta, developed this cake as part of a book project for Steven Satterfield, the co-owner and chef. She uses dutched, nonacidic cocoa powder so she punched up the acid with extra lemon juice, which helps with the bright red color. She adds goat cheese to her cream cheese frosting, to play against the subtle beet flavor. The chef liked it so much that he added it to the restaurant menu.