Roughly chop 3 peaches. Place chopped peach and pineapple juice in a food processor. Process until smooth. Transfer to a sieve set over a bowl. Using the back of a spoon, press peach mixture through sieve. Discard solids
Place ½ the raspberries in a bowl. Lightly crush with a fork. Thinly slice remaining peach.
Place ice cubes in a 2-litre-capacity jug. Add peach slices and purée, and crushed and whole raspberries. Pour over lemonade. Using a large spoon, stir to combine. Top with mint. Serve.
