When I'm shopping with my toddler, I see other mums giving their toddlers lovely fresh apple slices to chew on from a tupperware box. I have tried the lemon juice thing and they still go brown. My apples are manky and brown and it's really affecting my self esteem. I bought a bag of ready sliced apples from Waitrose the other day and the ingredients just said 'apples'. How do they do it?