Sponge Cake with Frozen Cream

A

• 2 cups milk
• 1 teaspoon cornstarch
• 2 egg yolks

1. Use ½ cup of the milk to dissolve the cornstarch. Add egg yolks and mix well. Stir in salt and sugar.
2. In a saucepan, bring remaining milk to a boil with lime rind. When boiling, stir in cornstarch mixture and cook over moderate heat, stirring constantly with a wooden spoon, until mixture boils and thickens. Stir in vanilla.
3. Pour half the