Line a half-sheet rimmed baking tray with parchment. Preheat oven 212° F / 100° C.

With a sharp chef’s knife, slice the fruit to 1/4-inch thickness.

Arrange fruit slices on prepared tray, allowing space between the slices. Do not overlap.

Bake in preheated oven for 2 hours. Use a spatula to flip the slices, then bake for 2 hours more.

Continue baking, turning the slices periodically, until dry to the touch. Depending on your oven, the fruit you’ve chosen, and the thickness of your slices, the entire process can take anywhere from 4-8 hours, so continue checking the oven periodically as they bake.

Use dried citrus slices as desired. Store in an airtight container or sealed plastic bag at room temperature for up to a year.