-
Heat the milk in
a saucepan until it reaches boiling point. Remove
from the heat.
-
Whisk the egg
yolks and sugar in a bowl over hot water until the
mixture thickens. Whisk in the hot milk and cream.
-
Replace over the
simmering water and whisk for 5 minutes, until the
custard thickens and coats the back of a spoon.
-
Cool by standing
the bowl in cold water, stirring to prevent a skin
from forming.
-
Stir in the
grated rind and lemon juice and pour the mixture
into a rigid freezer proof container. Cover and
freeze for 1 hour.
-
Whisk with a fork
to break up the ice crystals, Return to the freezer
for 45 minutes and whisk again. Freeze until firm.
-
Remove from the
freezer 10 minutes before serving.