Instructions:
- Preheat oven to the lowest setting (ideally 170°F / 75°C, or use a dehydrator). Line two large baking sheets with silicone mats or parchment paper.
- Combine the fruit, lemon juice, optional sweetener, and salt in a high-speed blender. Blend until completely smooth.
- If you dislike seeds, press the puree through a fine-mesh sieve. Discard any solids.
- Taste the puree and adjust sweetness or acidity if required. The mixture should be intensely flavoured.
- Pour the puree onto the prepared baking sheets. Use an offset spatula to spread the mixture evenly into a thin, consistent layer (about 1/8 inch or 3mm thick).
- Place the trays in the oven/dehydrator. Prop the oven door open slightly to allow moisture to escape.
- Check every 1-2 hours, rotating trays for even drying. Drying may take 4 to 8 hours depending on your setup.
- The leather is ready when it is no longer sticky to the touch, pliable, and peels easily from the mat without cracking sharply.
- Remove from the oven/dehydrator and let cool completely. Once cool, peel off the mat and slice into strips or squares using a sharp knife or pizza cutter.
- Roll individual strips tightly in wax paper or parchment paper to prevent sticking, then store them in an airtight container at room temperature.