Separate the egg whites from the yolks. Beat the yolks until smooth, then add the whites and beat until well combined.

Add the sweetened condensed milk and whole milk, and mix until smooth.

To make the caramel: Add the sugar to a pan with a splash of water. Cook over low heat, stirring gently until the sugar melts and turns a light golden color. Squeeze in a little lemon juice.

Pour the caramel into the mold, then pour in the egg mixture. Steam for 30 minutes, then enjoy.