Scale a recipe up or down with a bot, without ruining it

1. Convert to weight first

Ask the bot to convert volume to grams before scaling; grams scale cleanly and avoid "2/3 of 3/4 cup". Rough guide: 1 cup all-purpose flour is about 120-130 g depending on how it is scooped, so weigh when you can.

2. What does not scale straight

• Pan size and depth: doubling a cake in the same pan changes baking time and may not set.
• Cooking time: depends on thickness, not total weight. A double batch of soup takes longer to boil; two roasts take about as long as one if they are the same size.
• Salt and strong spices: scale, then taste; start at about 75% when tripling or more.
• Leavening: usually scales for modest changes; very large batches are better made as several normal batches.
• Evaporation: wider pans reduce faster.

3. Paste this prompt

Scale this recipe from [4] to [10] servings.
1. Convert every ingredient to grams/ml first, then scale.
2. Round to amounts a home cook can measure.
3. Flag anything that should NOT scale linearly (salt, spices, leavening, pan size, time) and suggest what to do.
4. Tell me what pan(s) to use and how cooking time may change.
Recipe:
[paste]

4. Double-check the math

Pick two ingredients and verify the multiplication yourself. Bots occasionally slip a decimal.

Where these facts come from

• FoodSafety.gov: Safe minimum internal temperatures
• USDA FSIS: Leftovers and food safety
• USDA FoodData Central: nutrient data to check a bot's numbers
• FDA: Food allergies

Checked Oct 29, 2026. Bots make arithmetic and nutrition mistakes. Spot-check numbers against FoodData Central and labels.