Pâte à Biscuit Manqué (Biscuit Manqué Batter)

Ingredients

• 500 grammes caster sugar
• 18 egg yolks
• 400 grammes flour
• 300 grammes butter
• 16 egg whites beaten to snow
• 3 spoonfuls rum
• butter and flour

Instructions

1. Work the sugar and the yolks in an earthenware bowl until the mixture has become white and light.
2. Add the rum, the flour, the well-firm whites, and the butter, melted and decanted.
3. Put into buttered and floured moulds.
4. Bake in an oven of moderate heat.