Pastry:To create the pastry for the tart, cream together butter, sugar and egg, then add flour. Press into a greased lamington tin and spoon rhubarb over the pastry.
Boil together water, sugar, egg, juice and rind. Thicken with cornflour and lastly add the butter. Cool slightly and pour over the rhubarb. Cook in moderate oven (180-200 c) for 30 minutes. Serve hot with cream.
This rhubarb lemon tart recipe serves 10