How much do you spend at the supermarket each week? $50? $100? $150? Or perhaps you spend nothing at all, instead preferring to order takeaways or dine at restaurants? For those of you that prefer to cook, how much of the food you buy ends up in the bin (or worse, untouched at the back of the fridge) at the end of each week? As you might have guessed, today we're talking about food Waste. The one trillion dollar global catastrophe.