- Combine all ingredients except for brown sugar in a saucepan and bring to a simmer over medium heat, stirring occasionally.
- Allow to simmer for 10 minutes and then gradually add sugar while stirring frequently.
- Let mixture cool, then strain. Store syrup refrigerated for up to 2 months.
Combine 1 part syrup with 3 parts hard apple cider and top with just enough soda to create a foamy head.