Raspberry Limes

Pick through the raspberries and rinse briefly, then let them drain well.

Place the raspberries with vodka and raspberry syrup into a tall container and purée finely.

Pour the raspberry limes into a clean bottle and close it tightly.

Store in the refrigerator until the limes is well chilled.

To serve, put 5 tbsp of limes into a glass and top up with well-chilled sparkling wine.