1. Wash the kumquat, remove the pit, and chop.
2. Cut the apple into pieces and set aside.
3. Pour water and rock sugar into the pot and boil until the water boils. The water probably has no more fruit.
4. After the water is boiled, put it in the water and cook for about 10 minutes.
5. Crush the fruit a bit, stir fry slowly, etc. to thicken.
6. This looks good, you can also drop a few drops of lemon juice for better storage, and can be bottled and stored in the refrigerator when it is cold.
7. Simple, delicious and healthy jam to make yourself.
