Spanish Lemon Ice

Directions

1. 1
   Whisk the egg yolks with the milk.
2. 2
   Add the sugar, grated zest and juice of the lemons.
3. 3
   In a separate bowl, whisk the egg whites until stiff and fold into the lemon mixture.
4. 4
   Pour into a shallow container and half freeze.
5. 5
   Remove and whisk or break it up in a food processor, then put it back into the freezer.
6. 6
   This prevents ice crystals forming.
7. 7
   Leave in the freezer overnight to firm before serving.