The strange maths of cooking for one person

Cooking for one gets tricky when recipes and pack sizes assume you have company. A little planning can mean less waste and fewer forgotten vegetables in the fridge.

Cooking for one sounds simple until a recipe serves four, the smallest bag of spinach seems to expect a family, and half a cabbage starts appearing in every meal you make.

You buy food for one appetite, but supermarket portions do not always cooperate. Stats SA put annual food and non-alcoholic beverage inflation at 1.6% in June 2026, down from 1.9% in May. A pantry stocked around what you eat helps when fresh food starts piling up faster than you can finish it.

One portion has a habit of becoming four

Say a recipe wants half a packet of mince. You cook the packet because leaving the other half raw in the fridge sounds like tomorrow's problem. Congratulations, dinner has booked itself in for several nights.

Larger packs can have a lower price per unit, but the saving disappears if part of the food ends up in the bin. CSIR research estimated that 10.3 million tonnes of edible food earmarked for people in South Africa does not reach a human stomach each year, with 18% of food waste occurring at the consumption stage. Supermarket loyalty discounts can make the larger pack look tempting as well. The deal only helps your grocery spend if you can finish, freeze or share what you buy.

The annoying part is not always the cooking. It is opening the fridge on Thursday and discovering Monday's dinner is still waiting for another appearance.

You do not have to eat the same dinner until Friday

Freeze one or two portions before meal three arrives. WWF South Africa recommends preparing the right quantity where possible and freezing leftovers when you cook more than planned. You can split mince, chicken, bread or chopped vegetables into smaller portions when you unpack the groceries. Future-you then gets dinner without having to face the same pot four nights in a row.

Changing one part of the meal helps as well. Roast vegetables can go beside dinner tonight, into eggs tomorrow, or into pasta another day. Rice can become fried rice. Cooked chicken can go into a sandwich instead of returning with the same sauce and side dish. There is also a point where buying lunch instead becomes tempting because another container of leftovers has lost its charm. One planned meal out can break the repetition before perfectly edible food starts looking like punishment.

Cooking for one becomes easier when every ingredient does not have to return in exactly the same form until the packet is empty.

Cooking for one does not divide neatly into supermarket pack sizes and recipe servings. Buy with your own appetite in mind, freeze part of a batch before boredom wins, and notice which fresh foods you repeatedly throw away. Dinner should feed you tonight, not become a four-night obligation you resent by Thursday.