This recipe for a fluffy okara (soy pulp) black tea cake can be made in just 2 minutes in the microwave! The rich aroma is enhanced by steeping the tea leaves in warm soy milk. Simply mix together eggs, unsweetened yogurt, okara powder, brown sugar, and baking powder, then microwave. Because it uses okara powder and soy milk yogurt, it's a low-carb and healthy treat. With a surprisingly authentic flavor for an okara cake, it's a perfect and easy dessert for tea lovers, those on a diet, and even beginners at baking.