Peel the quince and cut it into thin slices.

Arrange the quince slices in the air-fryer basket and roast at 190°C for 15 minutes, until the edges caramelise. If you do not have an air fryer, roast them in the oven preheated to the same temperature.

Transfer the roasted quince to a pot with the water, cinnamon stick and red pepper flakes, and simmer over low heat for 20 minutes.

Strain the mixture, stir in the honey and serve hot.