1. Wash kumquat and dry it with kitchen paper towels (or dry it naturally);

2. Draw 5-6 deep lines longitudinally on kumquat with a knife, then flatten and remove seeds;

3. Put the processed kumquat into the pot, add water and sugar and cook it on low heat, stirring it from time to time, and turn off the heat when the soup is sticky and kumquat has a translucent feeling;

4. Drain the cooked kumquat as much as possible and take it out;

5. Put it neatly on the baking net and bake it in the oven preheated to 150 degrees for half an hour (if there is enough sunshine, it can also be exposed to the sun and dried naturally);

6. Take it out to cool, and then apply a layer of fine sugar on the surface;

7. Put the kumquat cake wrapped with sugar directly into the refrigerator and air dry naturally 1-2 days.