1, wash and cut the apple into 4 pieces, remove the core (no need to peel).

2, cut the apple into very, very thin slices (as thin as possible).

3. Stir 1 tablespoon of lemon juice into 250 grams of water and soak the sliced apples in the water for 15 minutes.

4: Arrange the apple slices neatly on a baking tray or baking sheet. (If using a baking sheet, spread a layer of tarpaulin or heavy greaseproof paper to prevent sticking.) Generally, one apple cut out of the slices will fill at least 2 baking sheets.

5, preheat the oven to 100 ℃, put the baking sheet or baking net into the oven, you can put two trays at a time, respectively, on different levels can be. Close the oven door and bake for about 2 hours, until the water in the apple slices is completely dry.

6. Once baked and cooled, the apple slices will be crisp. Remove them from the baking sheet or grid and store in an airtight container if not eating immediately.