Ingredients for blueberry yam: one yam, blueberry jam, and a little rock sugar. Method: 1. Wash the yam, peel it, divide it into sections and steam for 15-20 minutes. 2. Put the rock sugar in a bowl. , add warm water until dissolved and set aside 3. Put the blueberry jam into a bowl, pour a little rock sugar water, and stir evenly 4. Take out the steamed yam, let it cool down, pour one or two spoons of rock sugar water, and stir a few times 5 . Put the yam into a painting bag (a food bag is also acceptable), and use a rolling pin to press it into a puree. 6. Squeeze it into a bowl and pour blueberry juice over it