The caramel :
Put the sugar in pot on medium heat, and leave it to melt and caramelize. To stir, gently shake the pot.
Pour the caramel in the ramekins and set aside.
Put the evaporated and the condensed milk to boil together.
Beat the 3 eggs, then, once the milks have boiled, pour them on the eggs while stirring.
Pour this batter in each ramekin. Put them in a deep baking tray, and pour some boiling water in the tray to make a water bath.
Bake 50 minutes at 320°F (160°C).
Wait until they are really cold before unmoulding.
There you are, your condensed milk flans are ready!