Cooking low and slow, like many recipes for ‘cheap-eats’ suggest, costs money in the form of energy bills: using a microwave, gas for the hob, the constant running of a fridge in which to keep food fresh. As does equipment; even the most basic of kitchens needs things to cook on and in. All of this assumes that someone has a home, with a kitchen to cook in, in the first place. At that point a poor diet is the least of their worries. My initial experiments for this project centred around the notion of lowering these costs. All of these DIY solar cookers (below) did eventually heat up the chickpea stew I attempted to cook in them. However, in the UK, we simply do not have enough sunshine to make solar cooking even a vaguely practical idea.