Preheat the oven to 160ºC (325ºF). Beat egg yolks together with lemon rind or vanilla. Pour condensed milk, add the evaporated or fresh milk and beat well.
Line the heart-shaped mold with the caramel syrup. Pour gently the egg/milk mixture into the mold. Cover with aluminum foil. Place this in a large oven pan half-filled with water (bain-marie). Bake for an hour or until the mixture is firm.
https://cookpad.com/us/recipes/355833-amies-easy-caramel-syrup
Let it cool before placing the mold in the refrigerator. Chill for 5-6 hours before serving.
Transfer into a serving plate. Serve, and enjoy.
