Make this citrusy-sweet syrup up to three days ahead. It's also tasty swirled into unsweetened iced tea.
Cook all ingredients in a small saucepan over low heat until sugar dissolves. Bring to a boil; reduce heat, and simmer 1 minute.
Remove from heat; let stand 15 minutes. Remove and discard ginger and orange rind. Cool syrup; chill 1 hour or up to 3 days.
Note: Remove rind from an orange using a vegetable peeler or paring knife. Avoid the white, bitter pith as much as possible.