EARL GREY-GRAPEFRUIT SHRUB
Zest 1 grapefruit, then section the fruit, cutting it away from the peel and inner membranes. You should have 5 teaspoons zest and ¾ cup grapefruit sections. Purée zest, sections, and any juices with 1 cup sugar and 1 cup white wine vinegar. Add 1 Earl Grey tea bag. Chill, covered, 4 hours to 2 days. Remove tea bag and strain. (Shrub keeps up to 3 weeks, chilled.) Makes 2 cups, enough for 8 drinks or cocktails.