Appears in Cook's Illustrated November/December 2002, America's Test Kitchen TV
Forget about ersatz convenience-store cake. We set out to explore the secrets of the real thing: a dense, tender cake with rich streusel topping.
We had two goals when developing our sour cream coffee cake recipe: We wanted a decadent, ultra-moist cake, pleasantly rich and dense from the addition of sour cream, and we had to have crisp, crunchy, melt-in-your-mouth streusel on the ins...