Instructions
    
          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.
Notes
    
          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.
History
    
          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.
Cocktail summary
        Year
    
          1843
    
      Is an
    
          authentic recipe
    
      Mezcal, Milk, Whole egg, Sugar
PT5M
PT0M
Cocktail
Cocktail
12
craft, alcoholic
           
I curated this slightly to bring it into line with the cited link (which is Wondrich's Esquire article).