Leche Flan

Use a hand mixer or a beater to combine the custard ingredients -- 10 egg yolks (preferrably duck egg), a big can of evaporated milk, a big can of condensed milk and 2 cups of sugar. Add half teaspoon of grated dayap peel or lime zest.

To make the caramel, pour 2 cups of sugar in a small pot over low heat. Stir the sugar when bubbles start to appear. Wait until sugar is dissolved. Pour the caramel into flan molds or custard cups, followed by the custard mixture.

Cover the flan molds with foil or plastic wrap (you may fasten it with rubber bands). Place the flan molds in a steamer and cook for an hour or until mixture is firm.

As an alternative, you may use oven to cook the flan. Preheat oven to 325 degrees. Put the flan molds into a bigger tray filled with water (adding water every 20 minutes). Bake for an hour or until mixture is firm.