Ingredients
2 tablespoons cornstarch
3 1/2 cups milk
2/3 cup granulated sugar
6 large egg yolks
Zest of 1 lemon
1 small cinnamon stick
1/4 cup superfine sugar
Preparation
Dissolve the cornstarch in 1/2 cup of the milk. Beat together granulated sugar and egg yolks until pale yellow and thick, then beat in cornstarch mixture. Set aside.
In a medium saucepan over low heat, combine remaining 3 cups of milk, the lemon zest, and the cinnamon stick. Heat to boiling. Whisking quickly, add the egg-cornstarch mixture; lower heat and continue to stir until thickened. Strain, then pour into shallow dessert dishes or small ramekins to a depth of 5/8 inch. Let cool.
Sprinkle flans with superfine sugar. With a hot salamander, or under a broiler, heat tops until golden brown.