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Plan a family week of meals and a shopping list under £100 with ChatGPT

PartialEvidence: Described by posterPosted Last checked

Sarah Rainey's ChatGPT meal plan kept the shop to £77.80, but recipes were vague and some taco toppings were missing from the list.

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  2. Open ChatGPT.
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Prompt

Recreated prompt

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What the prompt labels mean

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Please could you plan weekly meals for my family (two adults and two children)? We need three meals plus snacks a day. One adult can't have dairy, every meal must be healthy, rich in vegetables and take less than half an hour to prepare, and I'd like recipes and a shopping list with quantities and costs that stays under £100 a week.

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ChatGPT Used in sourceGemini Grok Claude

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Optional stronger version

Our rewrite with extra checks. The poster didn't test it.

Before you start, ask me 1–3 short questions about the details below and wait for my answers. Once I've answered, confirm the plan in one line and run the whole task start to finish.

Goal: Plan a week of quick family meals and a complete shopping list that stays under my budget.

Questions to ask me first:
- Who's eating, and what diets or dislikes do you need to cover?
- What's your weekly budget and where do you shop?
- How much time do you have to cook on weeknights?

Inputs (fill in or confirm):
- Household and diets: [PEOPLE AND DIETS]
- Weekly budget: [AMOUNT]
- Store: [STORE]
- Max prep time: [MINUTES]
- Meals the kids will reliably eat: [LIST]

Rules:
- Every ingredient in every recipe, including toppings and sides, must be on the shopping list.
- Give full recipes with quantities and clear steps, not one-line summaries.
- Group the list by store section with estimated prices.
- Keep the total under budget.

Checkpoint: Show me the week's meal list and wait for swaps before writing recipes and the list.

If you get stuck: If a recipe needs an ingredient that's hard to find, give a common swap.

Verify before you finish: Cross-check each recipe's ingredients against the shopping list and fix anything missing.

Output: A 7-day plan, full recipes and a categorized shopping list with a total.

Done when: I can shop once and cook every meal without a missing ingredient.

AI tool

ChatGPT

Outcome

Sarah Rainey of The Standard, a working parent of two kids aged three and five with a dairy-free spouse, asked the free version of ChatGPT to plan a week of healthy, veg-rich meals for two adults and two children, each taking under half an hour, plus snacks. Rainey had ChatGPT add a Friday night curry, drop the turkey and add more pasta, and it supplied recipes and a categorized shopping list with quantities and costs for a £100 weekly budget. The supermarket bill came to £77.80, more than £20 under the family's usual food budget. The recipes were thin, though: a two-line beef taco recipe called for toppings that weren't on the shopping list, and anything more complex than the basics was hit and miss.

Evidence: Described by posterThe person describes what happened in words, without screenshots or video.

Known limitations

PartialThe source says it only partly worked, or had a significant problem a person had to deal with.

What went wrong: The shopping bill came in under budget, but the recipes were vague and some ingredients, such as taco toppings, were missing from the list.

Source

Posted
by Sarah Rainey (The Standard)
Last checked
Method:
How we verify

https://www.standard.co.uk/lifestyle/ai-private-chef-shopping-list-meal-planning-chatgpt-glutenfree-vegetarian-b1187629.html

Context: The first line of the prompt is quoted in the source; the rest is recreated from what Rainey described. Prices are UK supermarket prices from 2024.

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