Whether you are cooking a romantic dinner for two from a recipe designed for six, or hosting a family reunion requiring double batches of chili, scaling a recipe is one of the most practical skills a home cook can learn.
1. The Core Formula: The Conversion Factor
To scale any ingredient, find your multiplier (conversion factor):
For example, if a curry recipe serves 4, and you want to serve 6: 6 ÷ 4 = 1.5. Multiply every ingredient quantity by 1.5.
2. Ingredients That Don't Scale Linearly
- Spices & Chilies: Pungent spices (cayenne, black pepper, cloves) don't always need full doubling. When doubling, start with 1.5x and adjust to taste.
- Alcohol & Acids: Deglazing liquids and vinegars evaporate at different rates in larger pans. Start conservative.
- Salt: Always season to taste rather than strictly multiplying kosher salt measurements.
3. Pan Sizes and Cooking Times
Doubling a recipe does not mean doubling the baking time! Cooking time depends on the thickness and volume of food in direct contact with heat. If you double a stew in a larger Dutch oven, cooking time will remain nearly identical.
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