Raw egg may contain salmonella. Egg whites are used in cocktails to add a frothy texture. The egg white may be omitted, the texture will be different. Aquafaba, juice from canned chickpeas, may be used as a substitute in equal volume.
In a pot combine 1 cup of sugar, 1 cup of water, and 2 cinnamon sticks (broken apart). Bring to a boil, stir to dissolve sugar, let cool, and strain. Keep refrigerated.