Got more rhubarb than you know what to do with? Turn the tart vegetable into a refreshing, fizzy sipper.

It's refreshingly tart, it's boozy and festive, and it'll get everyone talking about the merits (or demerits?) of drinking vinegar.

Scoop this icy melon snow into a glass with prosecco and sparkling water, and you have the antidote to summer's relentless, beating heat.