Ingredients :

1 cup sugar
1 cup key lime juice
2 egg whites
12 ice cubes, crushed
Few drops Angostura Bitter
2 cups pisco

Preparation:

Blend pisco with sugar, lemon juice and Angostura Bitter.

Add ice and finally the egg white. Blend a few minutes.

Pour into small glasses and top with a pinch of cinnamon powder and a few drops of Angostura Bitter.