Shrubs are so easy and so yummy! You can mix with sparkling water for a super refreshing beverage or spike it if you need something stronger. I used my own very sweet berries so I cut the sugar in 1/2. If your using frozen or store bought, I would increase it by 1/4 c.
1 c apple cider vinegar
1 c strawberries
1/2 c sugar
2 inch strip of lemon rind
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.