2. Wash the oat kernels, put them into the pot, add 4 bowls of water and boil them until they are cooked and flowery;

3. Stir cold soybean milk and corn flour to make corn paste;

4. Slowly pour the corn paste into the cooked oat kernel pot, stir with a spoon and boil;

5. Then turn to low heat for 10 minute, turn off the fire and add sugar to taste.