They based this sweet-tart concoction on the classic Singapore sling, replacing the traditional cherry brandy with an intensely vibrant homemade sour-cherry syrup. With a squirt of sparkling water ...

Add the sugar and melted butter and beat until pale yellow, 1 minute. Beat in the sour cream, vanilla and lemon zest until blended. Add the dry ingredients and beat at low speed until almost blended.

Ruby Mellen is a reporter on the climate desk focusing on the human impacts of climate change. Previously she was a visual enterprise reporter for The Washington Post's international desk, working ...