The £40/week grocery list that actually works for a family of four

£40 for a family of four's weekly groceries sounds implausible until you see the actual structure behind it. It isn't about buying less food — it's about three deliberate decisions that compound.

Decision one: legumes carry the week, meat seasons it

A week built around three or four legume-based dinners (a lentil ragu, a bean chilli, a chickpea curry) with meat used sparingly — browned mince mixed through a pot of beans, rather than a chicken breast per person — does more for the total than any single substitution. This isn't a vegetarian week; it's a week where meat is one ingredient among several, not the anchor of every plate.

Decision two: every dinner has a second life

Cook once, eat twice isn't a slogan — it's arithmetic. A bolognese that makes six portions but is eaten as four dinners and two next-day lunches effectively halves the cost of those lunches, because the marginal cost of "one more portion from a pot that's already made" is close to nothing.

Decision three: the shop matches the plan exactly

No extra trips, no browsing. A consolidated list, bought once, with nothing on it that isn't going into one of the week's meals. Unplanned extras — even small ones — are where a tight budget actually breaks, far more often than the planned meals themselves running over.

A representative week

• Mon/Tue: Lentil ragu with pasta (dinner + next-day lunch)
• Wed: One-pot chickpea curry with rice (dinner + leftover lunch)
• Thu: Curry, round two, or a quick repeat of whatever's left
• Fri: Bean chilli with rice (dinner + lunch)
• Weekend: One slightly more involved meal, using up whatever's left in the fridge before the next shop

Four core components — lentils, chickpeas, beans, rice — reused across the week, plus vegetables and a modest amount of meat, is what makes a number like this hold up in practice rather than just on paper.

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This is a real example from Mealconomy's published meal plans, not a hypothetical — see the full £40/week plan for the complete shopping list and day-by-day breakdown.