The Operation Feed the Nation program of 1976–80 sought to increase local food production and thereby reduce imports. Citizens were encouraged to cultivate any empty plot of land, urban dwellers being encouraged to garden undeveloped building plots.

things that someone says or does, when you are referring to them in a general way without saying exactly what they are

Food is any substance consumed by an organism for nutritional support. Food is usually of plant, animal, or fungal origin and contains essential nutrients such as carbohydrates, fats, proteins, vitamins, or minerals.