The quantity of food is important, but more important is to get good nutrition from food that we consume and money can be saved at the same time by making good choices. Eating more fresh and local fruit and veg, this is cheaper and has nutrition. Reduce cooking time to have the vegetables slightly crunchy than to over-cook (so saving fuel bill). Reduce use of cooking oil. Wear locally produced clothing rather than imported, this saves money but also helps local jobs. Drink fresh coconut water, instead of fizzy drinks.