• 1 cup frozen whole cranberries
• ½ cup sugar
• ½ cup water
• 1 sprig fresh rosemary, plus 4 sprigs to garnish
• ¼ cup fresh lime juice
• 2 cups chilled sparkling water
• Ice
• A few cranberries and 4 lime wheels, to garnish

1. Simmer the cranberries, sugar, water and 1 rosemary sprig over medium heat for about 8 minutes, until the berries burst.
2. Mash lightly, let it cool, then strain and discard the rosemary. You'll have about ¾ cup of syrup.
3. Fill 4 glasses with ice. Add 3 tbsp of syrup and 1 tbsp of lime juice to each.
4. Top each glass with ½ cup of sparkling water and stir once.
5. Garnish with rosemary, a few cranberries and a lime wheel.

Using frozen cranberries: they go straight from the freezer into the pot, no thawing needed. The syrup keeps in the fridge for up to a week, so you can make it ahead for a party.