4 glasses of water
the rind from 3 lemons and 1 orange
3 glasses of lemon juice
Boil up the water in which you have dissolved the sugar. Add the rind from the citrus fruits. Let the syrup cool, then pour over the lemon juice.
Filter the liquid through a bunt, before putting it into the sorbetière or ice-cream maker.
Take it out before it hardens, as it should be eaten when it is still soft.