3 sticky potatoes, 4 salted egg yolks, appropriate amount of flour, appropriate amount of white sesame seeds, appropriate amount of maltose and appropriate amount of oil.

Steps of making moon cakes with mashed potatoes and egg yolk reunion:

Step 1 Clean potatoes, peel them, put them in a microwave oven for 5 minutes, take them out, and when they are cool, press them into a paste with fresh-keeping bags, and make sure they are all ground into mud. Mashed potatoes are added with flour, maltose oil and dough; Put the salted egg yolk in a baking pan, bake at 120 degrees for 3 minutes, and take it out. Put white sesame seeds into a pan and bake them into golden yellow with low fire to give off fragrance;

Step 2, pressing a proper amount of mashed potato dough into a small cake, putting salted egg yolk in the middle, wrapping all the salted egg yolk with mashed potato cakes, rolling into a ball, and then rolling in baked white sesame seeds to evenly coat the surface with sesame seeds; Put the potato balls wrapped with sesame seeds into the mold, compact them, then pour them out, put them in the oven 180℃ and bake them for 5 minutes, then take out the egg yolk liquid and bake them for 2 minutes.