Fruity milk jellies

Name: Fruity milk jellies
Prep time: 25 min
Cook time: 10 min
Total time: 35 min
Cuisine: British
Ingredients: 16 gelatine leaves; 1.2l full-fat milk; 200g peaches, fresh or from a can, drained; 200g icing sugar; yellow, pink, purple and orange food colouring(optional); flavourless oil, for the moulds; 200g raspberries; 200g blackberries; 200g mango, fresh or from a can, drained; ice cream, to serve (optional)