Instructions: 1 Cut the ends off the lemons, then cut the lemons in half. Squeeze the juice and remove the pulp from the lemons without splitting the skins.

2 Add the concentrated milk to the lemon juice and pulp, and blend in the liquidizer.

3 Pour the mixture into a bowl and leave in the freezer for 3 hours.

4 Before serving, fill the empty lemon skins with the frozen mixture.

At the court of Alexander the Great, and then during the reign of Nero, fruit salads and purees were served, mixed with honey and whipped egg white.

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