The skill behind this guide: Rosa - Recipe Creator AI Skill. Real recipes from whatever is actually in your fridge, scaled to your household and your equipment - $14.99, paid once, yours permanently.
View the Rosa skill →Claude is genuinely good at two kitchen problems: turning a fridge full of odds and ends into an actual recipe, and giving you the dish you asked for without a thousand words of preamble first. It is bad at one thing that matters more than either: it will state a cook time and an internal temperature with total confidence, and it is generating those, not looking them up. Cook to the temperatures published by USDA FSIS, measured with a thermometer. Everything else it says about the dish, you can take.
What is Claude actually good at in a kitchen?
- Cooking from what you have. List the contents of the fridge - half a cabbage, three eggs, a heel of parmesan, the rice you always have - and it builds a real dish around them rather than telling you to "combine your ingredients". This is the single most useful thing it does, and it cuts waste as a side effect.
- Stripping the waffle. When you know what you want, it gives ingredients, quantities and method. No childhood anecdote, no jump link.
- Scaling and substituting. Cooking for six instead of two, no ricotta, hob only because the oven died - it reworks quantities and method and tells you what changes about texture and timing, which is the part a straight swap list leaves out.
- Working inside constraints. Vegetarian, dairy-free, nothing spicy because of the kids, twenty minutes maximum. State them once and they hold for the rest of the conversation.
What will it get wrong?
It generates plausible text. For flavour combinations and method that is fine - plausible is basically what a recipe is. For numbers that decide whether food is safe, plausible is the problem.
- Cook times. "Roast for 35-40 minutes" is produced from what similar recipes tend to say, not from your oven, your tray, or the thickness of your chicken thighs. Treat every time as a rough window and check the food.
- Internal temperatures. It will confidently give you a figure. Sometimes it matches FSIS, sometimes it is a few degrees off, and it will not tell you which. Use the table below instead.
- Freshness and safety of your specific ingredients. It cannot see or smell anything. If it says the chicken is fine, it is guessing.
- Allergens in branded products. It cannot read the packet in your hand, manufacturers reformulate, and "may contain" statements change. Read the label yourself, every time, if anyone at the table has a diagnosed allergy.
- Recalls. Training data has a cutoff. A product withdrawn last month does not exist as far as Claude is concerned.
The food safety numbers, from USDA FSIS - not from a chatbot
Safe minimum internal temperatures, measured with a food thermometer in the thickest part:
| Food | Temperature |
|---|---|
| All poultry, including ground | 165°F / 74°C |
| Ground beef, pork, lamb, veal | 160°F / 71°C |
| Whole cuts of beef, pork, lamb, veal | 145°F / 63°C, then rest 3 minutes |
| Fish and shellfish | 145°F / 63°C |
| Egg dishes | 160°F / 71°C |
| Leftovers, reheated | 165°F / 74°C |
The danger zone is 40-140°F (4-60°C) - bacteria multiply fastest there, doubling in as little as 20 minutes. Perishable food should never sit out more than 2 hours, or 1 hour if the room is above 90°F (32°C). Get leftovers into shallow containers and into a fridge at 40°F (4°C) or below within those 2 hours; they keep 3-4 days refrigerated, or 3-4 months frozen. Colour and cut-time are not tests. A thermometer is.
One "use what I have" recipe right now, without installing anything. Paste it into Claude or ChatGPT and give it your actual fridge contents.
View AI Recipe Generator →How do you install the skill?
The download is a ZIP with a SKILL.md file at its root. In the Claude desktop app open Customize → Skills, upload the ZIP, and toggle it on. That is the whole install.
Skills run on Free, Pro, Max, Team and Enterprise - there is no paid-plan gate. The real requirement is code execution: on Free, Pro and Max, switch on Code execution and file creation under Settings → Capabilities. On Team and Enterprise an owner can disable it for the whole organisation, which is why the Skills menu sometimes looks greyed out - an admin setting, not your subscription.
On ChatGPT or Gemini, or unable to enable code execution? Open the ZIP, copy the text of SKILL.md, and paste it into custom instructions. You lose file handling; the persona and the rules still work.
Which prompts actually produce a cookable recipe?
Copy these and fill in the brackets. The rules at the bottom of each are what stop the invented-temperature problem - leave them in.
1. Dinner out of whatever is in the fridge
2. The dish you want, with none of the preamble
3. Adapting a recipe you already have
The same "use what you've got" approach applied to the bar cart - a matching drink from the spirits already in the cupboard. Our wine and drinks advisor guide covers the bottle-shop version.
View AI Cocktail Recipe Generator →Where does it fail?
Worth reading before you rely on it, because each of these produces output that reads as correct.
- Invented authority on numbers. Covered above and worth repeating: cook times and internal temperatures are generated, not retrieved. This is the one failure that can actually make someone ill.
- Ratios drift when you scale. Ask for a recipe at six portions instead of two and salt, raising agents and liquid often get multiplied straight through when they should not, and pan size gets ignored entirely. Ask explicitly what should not scale linearly.
- It agrees with you. Say "that sounds too much salt" and it will halve it rather than explain why the amount was right. If you want a real opinion, ask it to argue against you.
- Obscure and regional dishes go soft. The further from well-documented home cooking you get, the more it produces a generic dish wearing the right name. Cross-check anything traditional against a source from that cuisine.
- Fermenting, curing, canning and preserving. These depend on salt percentages, acidity and time in ways that are safety-critical, not stylistic. Do not take these from a chatbot at all - use a tested source.
- It has no memory between chats. A loaded skill keeps your dislikes, equipment and household size; a bare chat starts from nothing every time.
Why bother with a skill rather than a one-off prompt?
Because the constraints are the boring part. A loaded skill already knows you have no oven, that one person will not eat mushrooms, that you cook for four on weeknights and two at weekends - so you type "chicken thighs, half a lemon, an hour" and get something that fits, instead of restating your kitchen every time. For the shopping side of the same problem, the grocery and pantry manager guide handles the list, and the meal planner guide covers the week ahead.
In summary:
Want a recipe creator that keeps your kit, your household and your dislikes between sessions? Rosa, $14.99. Just need one recipe out of tonight's fridge? The AI Recipe Generator prompt pack, $9. A drink to go with it? The AI Cocktail Recipe Generator, $9. All work in Claude, ChatGPT and any AI chat, no coding, 30-day money-back guarantee. None of them replaces a thermometer.
Rosa - Recipe Creator AI Skill
Upload one ZIP and it turns whatever is in your fridge into a real recipe - scaled to your household, your equipment and the time you have. No subscription. Yours permanently.
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