Theres always something sweet in the ovens at Honey & Co., the tiny restaurant in London where the day is marked by what comes out of the pastry section. In the morning, sticky buns are stuffed full of cherries and pistachios; loaves of rich dough are rolled with chocolate, hazelnuts, and cinnamon. Lunch is a crisp, crumbly shell of pastry filled with spiced lamb or burnt eggplant, and at teat…