Start With the Fridge, Not the Recipe Book

The most useful thing you can do before you write a shopping list is open the fridge and take a proper look. Not a quick glance while reaching for the milk — a real audit. Pull everything forward and group it: vegetables that are past their best, half-used tubs of cream cheese or pesto, the lone courgette, the soft pepper, the bag of spinach quietly turning to liquid at the back.

This is your starting point. Those items are already paid for, so every meal you build around them is money you don't spend again. Give the shelf with the tired vegetables a name — the use-it-up shelf — and keep it at eye level. Anything on it goes into the plan first.

Build a Flexible Plan With Slots, Not Schedules

A rigid plan with seven named meals rarely survives contact with a Tuesday. A flexible plan does. Instead of writing "Monday: lasagne", write "something with mince and the wrinkly peppers". Think in slots: one slow-cooker or oven meal, two quick pasta or rice dishes, one soup or traybake, one leftovers night, and one night deliberately left empty for whatever life brings.

Then match your fresh ingredients to the slots, using the shortest-life items earliest. Fish on Tuesday, chicken on Wednesday, hard cheese and root vegetables towards the weekend. Write it on the back of an envelope and stick it to the fridge door. A plan you can see is a plan you'll actually follow.

Shop Once, With a List That Matches Your Plan

Now build the list from the plan, not from habit. Check your cupboards before you add anything — most of us own four tins of chopped tomatoes and have no idea.

• Write the list in the order you walk the shop, so you're not doubling back and grabbing extras.
• Buy loose fruit and veg where you can, so you take only what you'll genuinely use.
• Allow one wildcard — something you fancy, or a reduced item worth building a meal around. Total rigidity leads to takeaways.
• Ignore multi-buys on fresh items unless you have a plan or freezer space for them. Three for two on salad is not a bargain if two end up in the bin.

Freeze in Portions You'll Actually Use

Freezing is where meal planning turns into real savings, but only if you freeze in a way that makes future you's life easier.

• Portion before you freeze. Two-person portions, not a giant block of chilli you have to defrost in one go.
• Freeze flat. Bags of soup, stew and bolognese laid flat stack like books and defrost in a fraction of the time.
• Label everything with the contents and the date. A marker pen and a roll of masking tape cost pennies and save a lot of guesswork.
• Keep a simple inventory taped inside a cupboard door — a running list you cross off as you use things.
• Freeze the odds and ends: bread crusts for breadcrumbs, parmesan rinds for soup, chopped herbs in an ice cube tray with oil, vegetable trimmings in a bag for stock.

Leftovers Are Ingredients, Not Second Helpings

Leftovers get a bad reputation because we serve them the same way twice. Cook once, eat twice — but eat differently. Roast chicken becomes a curry on Wednesday, then a soup from the carcass on Thursday. Boiled potatoes become a tortilla or a weekend fry-up. Yesterday's roasted vegetables go into a frittata, a couscous salad, or a pasta bake with a spoonful of pesto stirred through.

A few reliable transformations: rice into egg-fried rice, stale bread into panzanella or a bread-and-butter pudding, overripe bananas into a loaf, soft fruit into a crumble or smoothie bags. Keep one "bitsa" night a week — bits of this, bits of that — where everything on the use-it-up shelf must go. It's oddly good fun, and it makes the biggest dent in your food waste.

Ten Minutes That Save You Every Week

None of this needs to be a project. Ten minutes on a Sunday evening — fridge audit, plan, list — is enough to change your week. Then five minutes before bed each night to check what needs using tomorrow, and whether anything should move from fridge to freezer.

Expect it to be imperfect. You'll still throw away the occasional bag of herbs; that's normal. But once planning around what you already have becomes the default, your weekly shop shrinks, your bin gets lighter, and the cooking gets more inventive. Start with the fridge this week and see what you can rescue.