How to shop once a week and not run out on Thursday
Buy the whole week in one trip, but stage the perishables: eat the delicate things in the first two days and the robust things later. Order the list by aisle so you walk the shop once, put a quantity on every line, and plan one meal entirely from the cupboard and freezer for the end of the week.
1Why one shop beats three small ones
Every trip to a supermarket costs about the same twenty minutes regardless of what you buy, and every trip is an opportunity to buy things you did not plan.
Three small shops is an hour of your week and an unpredictable bill. One shop is twenty minutes and a list you wrote when you were calm.
2Stage the week by what dies first
Fish, leaves, berries, fresh herbs and anything already cut go in the first two days. Broccoli, peppers, courgettes and mushrooms are fine to about day four. Roots, cabbage, onions, potatoes and citrus will outlast the week comfortably.
Plan the delicate meals early and the robust ones late and nothing needs to be rescued.
3Order the list the way the building is laid out
A list in the order the meals occurred to you sends you across the shop repeatedly. Produce is at one end; freezers are at the other.
Group it: produce, meat and fish, dairy and bakery, pantry, freezer. Do it once for your shop and reuse that order forever — it will be the same building next week.
4Put a number on every line
"Potatoes" is not an instruction, it is a decision postponed to the worst possible moment. Two kilos or six? For how many meals?
Quantities on the list are what stop both overbuying and the second trip. And if two meals need onions, the list should say the total once rather than the word twice.
5Leave the last meal to the cupboard
Plan one meal at the end of the week that needs nothing fresh: pasta and tinned tomatoes, a lentil soup, beans and rice, eggs on toast.
It is the shock absorber. If the week runs long, or something went off, or a plan moved, that meal is already there and no emergency trip is required.
Questions people ask next
How long does fresh food last in the fridge?
Fish and cut fruit, one to two days. Leaves and berries, two to three. Most whole vegetables, four to seven. Roots, cabbage and citrus, comfortably a week or more.
Is it cheaper to shop once a week?
Usually, because fewer trips mean fewer unplanned items. The saving comes from what you do not buy rather than from anything you do buy.
What should I always keep in the cupboard?
Tinned tomatoes, tinned pulses, pasta or rice, stock, oil and something acidic. That set makes a meal from nothing, which is what the end of a long week needs.
How do I stop forgetting things at the shop?
Write the list from the plan rather than from memory, merge anything that appears twice, and order it by aisle. Almost every forgotten item is one that was written down twice or not at all.
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