- 1 cup sugar
- 1/2 cup rice wine vinegar
- 1 cup blood orange juice (from 2 to 3 oranges) or regular orange juice
- Combine the sugar, vinegar, and juice in a small nonreactive saucepan. Bring to a boil over high heat. Cook until the mixture has reduced to 1 cup and thickened into a syrup, about 10 minutes. Cool completely before using.