Preparation time: a few minutes
Cooking time: 20 minutes
 

The quantity of concentrate and sugar is a matter of preference.

1. Wash the lemons well.
2. Remove a small part of the zest.
3. Cut the lemons into large wedges and remove the seeds; immerse the lemon wedges for about 20 minutes in a saucepan of boiling water.
4. Let cool, then liquefy in a blender.
5. Strain the mixture.
6. Store the lemon concentrate in a glass container in the fridge.
7. Serve by mixing some concentrate with water, sugar and a few mint leaves. If the water is not very cold, add one or two ice cubes.