Materials only flour, milk and purple potatoes can do what the cake, the specific method is as follows:

Preparation materials: 200 grams of flour, 50 grams of purple potatoes, 250 grams of milk

One, peeled and cut into slices of purple potatoes and steamed;

Two, purple potatoes of purple potatoes to add milk to make a paste;

Three, the flour to add yeast, sugar;

Four.

VII, into the boiling pot of water on high heat steaming for about 30 minutes;

VIII, and finally removed can be eaten.