Cawston Press Sparkling Elderflower Lemonade

A refreshing sparkling summer drink made with fresh elderflowers. There’s no alcohol in this recipe but you could add champagne to the cordial instead of sparkling water.

5 fully bloomed large elderflowers
500ml cold water
125g sugar
1 lemon, washed and sliced
4 tablespoons cider vinegar
Additional lemon juice and lemon slices (for serving)
Additional sugar
2 litres mineral water