Almost every recipe in circulation, including on this site, is written for four people. If you cook for one or two, that default quietly creates two problems: you either eat the same dish for days or you buy ingredients in quantities designed for a household you do not have.

Scaling down is not simply dividing by two. Some things scale linearly, some do not scale at all, and a few dishes are genuinely not worth making small. Knowing which is which is most of the skill.

What scales linearly and what does not

Ingredients mostly scale. Physics does not. A halved quantity in the same pan behaves differently because the ratio of surface area to volume has changed, which affects evaporation, browning, and time.

• Scales cleanly: proteins, vegetables, starches, most seasonings.
• Scales badly: liquid in braises and stews, where a halved quantity in the same pot reduces much faster and can dry out.
• Does not scale: pan size, cooking time, oven preheat, and anything where the depth of the food matters.
• Needs care: salt and spices. Halve them, then taste, since a small volume of food is easier to over-season.

Buy for flexibility, not for recipes

The single biggest change for a small household is what you buy rather than what you cook. Ingredients that can go in several directions, and ones that keep, are worth more than the exactly correct ingredient for tonight's recipe.

It also means preferring things sold loose or in small units, and treating the freezer as a normal part of the shopping process rather than a last resort.

• Prefer loose vegetables over bagged, and buy the number you need.
• Prefer whole cabbage, celeriac, and squash — they keep for weeks, unlike bagged salad which dies in days.
• Buy meat and fish in the quantity you will cook, or portion and freeze it the day you buy it.
• Keep frozen peas, spinach, and sweetcorn permanently. They are the anti-waste vegetables.
• Tinned beans and tinned fish are single-portion protein with no spoilage clock.

Portion at the point of purchase

Most waste in a small household happens because packaging sizes and appetite sizes do not match. The fix is to break the package down on the day you buy it, while you are still in the mood to be organised, rather than on day four when half of it has gone off.

Mince, chicken, fish, bacon, bread, and even herbs can be divided into meal-sized portions and frozen flat. Frozen flat and thin, most of them defrost in the fridge overnight or in cold water in twenty minutes.

Cook once, eat differently

For one or two people, deliberately doubling a component is often smarter than halving a dish. Cook a full batch of the base — beans, grains, roast vegetables, a braise — and then vary the finish across the week. This is the component approach applied at a smaller scale, and it is the difference between planned leftovers and grudging ones.

The key is that the repeated element should be neutral. A pot of plain beans becomes soup, a bowl, a side, or a filling. A pot of beans already cooked with heavy barbecue seasoning stays exactly one thing.

• Day one: as cooked, with a fresh element and a sauce.
• Day two: same base, different sauce and different texture on top.
• Day three: into something structurally different — a soup, a frittata, a fried rice.

Dishes that are genuinely good small

Some cooking suits one or two people better than it suits a table of six, and leaning on it is more satisfying than perpetually scaling recipes down.

• Anything in one pan: fried rice, omelettes and frittatas, stir-fries, a single piece of fish with vegetables.
• Pasta, which is inherently portioned by dry weight.
• Grain bowls, which are assembly rather than cooking.
• Soups and noodle soups, which are forgiving about quantity and reheat well.
• Toast-based cooking, which is not a lesser category — good bread, something cooked, an egg, an acid.

What not to cook small

A few dishes lose their point when scaled down, either because the technique needs volume or because the effort-to-portion ratio stops making sense. Roasting a whole chicken for one is fine if you want the leftovers and the stock, and pointless if you do not.

Deep-frying, large braises, most baking, and anything requiring a long reduction are better done at full size and either shared or frozen. This is not a failure of small-household cooking; it is a reason the freezer exists.

The freezer as a portioning tool

Used properly, a freezer converts the mismatch between package sizes and appetite into an advantage. The rules are simple: portion before freezing, freeze flat and fast, label everything with contents and date, and accept that quality declines slowly even though safety does not.

It also lets you take advantage of full-size cooking. A large batch of stew becomes four future dinners with no additional effort, which is the closest thing to free time a kitchen offers.