Recipe for one delicious fruit juice concoction

I bought a food processor the other day because I wanted to reproduce a fruit juice concoction I tried in a cafe in Cronulla (a southern suburb in New South Wales, Australia). The juice mixture consisted of apple, pear, strawberry and lemon and had just the right mixture of sweet and sourness.

I've got a big pear, strawberries, a lemon, a big mango and apple juice in my fridge. Now if I can just figure out how to use my funky new mixer/food processor I might just be able to come up with a fruity drink....