Step 1

Preheat the oven to 350°F (175°C)

Step 2

Beat the eggs really well, and then beat in the condensed milk and vanilla until combined.

Step 3

Beat in the whole milk.

Step 4

Add the lemon zest and stir.

Step 5

Coat a flan pan (any normal baking mold will do) with butter and then with caramel.

Step 6

Pour in the egg and milk mixture, and place in a water bath (bain marie) for about 35-50 minutes (the time will depend on the pan you are using-- so after about 35 minutes check frequently).

Step 7

When a toothpick inserted into the center of the flan comes out clean, it's ready!

Step 8

Let the flan cool completely, then flip over onto a serving dish. Spoon extra caramel sauce on top and enjoy!