Combine strawberries, sugar, vinegar and lemon zest in a medium nonreactive saucepan. Bring to a boil over medium-high heat. Remove from heat and let stand for 20 minutes. Strain into an airtight heatproof container. Refrigerate until cold, about 4 hours or up to 1 week.
52 calories;0 g fat(0 g sat); 0 g fiber; 13 g carbohydrates; 0 g protein; 2 mcg folate; 0 mg cholesterol; 13 g sugars; 13 g added sugars; 1 IU vitamin A; 6 mg vitamin C; 2 mg calcium; 0 mg iron; 0 mg sodium; 15 mg potassium