This sauce goes well with loads of different things: melon; pancakes; cheesecake; ice cream yada yada yada. Make some up and it’ll last in the fridge for a good 5 days, assuming you don’t scoff it all before then!
Take 1 pack frozen summer fruits, add 3 heaped tbsp icing sugar and heat gently till the sugar has dissolved and some of the fruit has started to break up. Leave to cool and serve as you wish. Add some more sugar to taste if you wish, depending on how you are serving it.