Preheat the oven to 350º.
Mix the milk, lime juice, tequila, salt, 1 tablespoon of the sugar and the egg yolks until very well combined.
The reaction of the milk with the lime juice will make for a thick filling.
Pour the mixture into the prepared pie crust.
Make meringue by beating the egg whites with the remaining 2 tablespoons sugar until stiff peaks are formed.
Top pie with meringue and bake pie for 15 minutes or until lightly browned on top