Drain the strawberries and drink the juice if you want to. Mash the strawberries with a fork in a large bowl.

Mix the custard powder and sugar together in a jug. Add a little milk and mix to a paste. Heat the remaining milk and when it has boiled pour it into the jug. Stir well and pour the custard back into the pan. Now cook over a low heat until thickened. Stir the custard into the strawberries and leave until cool. Fold in the double cream and then pour into a ice cream maker. Leave the icecream maker running until the ice cream had set.

before using. To freeze without the machine, pour the ice cream into a poly box and freeze for 3 hours, mash with a fork and continue freezing for 3 hours.