Pre-heat the oven to 180 C. Wash and chop the rhubarb ready for the crumble.

In a bowl, mix 60g of sugar and the water with the rhubarb.

In a separate bowl, rub together the butter, remaining sugar and flour together until it is very fine, then sprinkle it all over the rhubarb.

Bake in the oven for 45 minutes.

Serve alone, with custard, cream, ice-cream or fruit coulis.