Put the pot over medium heat, add the milk, cream and sugar and bring to boil until just about boiling.
When bubbles start to form from the edges, turn off the heat immediately, add the vanilla extract, stir, and leave to cool.
Mix 2 eggs and 2 egg yolks with a fork, add the cooled milk mixture and mix gently. (avoid bubbles)
Sift through a sieve to strain the egg white lumps. Discard the strained egg white lumps. Meanwhile, the caramel hardens.At this point, preheat the oven to 160 ℃. Divide the milk-egg mix into the ramekins.Cut 2 piece of aluminum foil and cover them. Put them in a deep oven pan and pour hot water to a depth of about 1.5cm. Make sure the aluminum foil does not touch the water.Bake in 160℃ preheated oven for 50 minutes. Remove from the oven, cool at room temperature, and place in the refrigerator for at least 4 hours.
When serving, soak the lower part in warm water for about 5 minutes. Melt the caramel on the bottom slightly.Cut around the edges with a knife. If you turn it over on a plate, the caramel flows over the cream custurd.