This is a recipe video for steamed sweet potato buns made in a bamboo steamer. Slice the sweet potatoes into ginkgo leaf shapes and heat them in the microwave. Add them to a batter made by mixing eggs, sugar, milk, vegetable oil, all-purpose flour, and baking powder. Place the batter, sweet potatoes, and black sesame seeds in a bamboo steamer and steam for 15 minutes to create fluffy, gently sweet steamed buns. A simple yet delicious treat that's perfect for a snack or breakfast.