Yasukochi's Sweet Stop is the home of the only and only Coffee Crunch cake. For decades, people have regularly swarmed to the small bakery storefront in San Francisco to pick up a slice.“One day we put out 6 dozen slices and they were gone at about 11:30”, head baker Kenji Yick says with a smile, “and we open up at 10”. The cake started as a popular dessert at Blum’s, a classic San Francisco diner that closed its doors decades ago.“I was born in 1963 in San Francisco. The only copy of the original recipe for the spongy cake and coffee-flavored candy topping found its way into Moses Yasukochi’s hands, Yick’s grandfather. “My grandfather worked with a guy that worked at Blum’s and he had the recipe“, Yick...