Use mandarin peels.

Main ingredient: 2500g of mandarin oranges?

Accessories: none in moderation

Step 1: Freshly picked mandarin oranges.

Step 2: Wipe its outer skin clean with paper towel.

Step 3: Using a knife, go over the bottom third of the mandarin orange and pull it apart, not to the top, leaving a small portion.

Step 4: Then pull on another cut across the top, again don't pull it off.

Step 5: Gently peel it off with your hands.

Step 6: Peel to the top being careful not to break it.

Step 7: Then reverse it from the bottom.

Step 8: Peel all the citrus, turn it upside down and put it in the sun.

Step 9: After two days in the sun, turn it inside out and continue to dry.

Step 10: Repeatedly dry it out, put it in an airtight jar, and take it out when you eat it.

Step 11: Finished product.