1 egg yolk
1 cup of evaporated milk
1/3 cup of minute tapioca
2/3 cup of sugar
1/4 teaspoon salt
1 cup of water
2 cups of very strong coffee
1 egg white
1 teaspoon real vanilla
Mix the egg yolk with a little bit of the milk in a saucepan. Add the rest of the milk, tapioca, sugar, salt, water, and coffee. Bring it to a boil over direct heat until tapioca is clear. Stir constantly to avoid sticking. Remove from heat. Add the stiffly beaten egg whites and fold into the hot mixture. Add vanilla into mixture and fold again. Cool.