Separate eggs. Beat sugar and yolks. Stir in mezcal. Whip the egg whites and fold in. Stir in the milk slowly. 2-3 hrs in fridge before serving.
You can add one cake of mexican chocolate. Grate it into 1 cup of milk and stir over low heat until dissolved, then allow the mixture to cool before adding.
Can substitute reposado tequila for the mezcal.
Made in prison by General Thomas Green of the Army of the Texas Republic and his men after bribing the guards to celebrate the battle of San Jacinto.
Supposedly they made it with donkey milk.