Scaling / The planning notebook
Scaling a recipe without losing track
One multiplier resizes the shopping list. The cooking method needs its own checks.
Calculate the multiplier
Divide the new serving count by the original serving count. Going from four servings to ten gives a multiplier of 2.5. Multiply each ingredient quantity by 2.5 and keep its existing unit. A 500 g rice entry becomes 1,250 g; a 200 g yogurt entry becomes 500 g.
This assumes the original serving count is meaningful for your meal. If the original recipe describes small servings and you need generous main-dish portions, scaling the stated count may not fit your needs. Start with a recipe and portion definition you trust.
Keep units attached to the ingredients
A number without a unit is easy to misread. Copy both into your list. The scaler retains units rather than converting them automatically. One cup of rice and one cup of chopped onion do not have the same weight, so there is no general cups-to-grams conversion for every ingredient.
Use decimal numbers: enter 0.5 for half a unit. Put each ingredient on its own line in the format name, amount, unit. Leave commas out of ingredient names and units. The three fields make the entries easy to check. Convert a fraction to a decimal before entering it.
Do not multiply cooking time
A quantity multiplier is not a time multiplier. A larger batch can have different depth, heat distribution and evaporation, and may need multiple vessels. This tool does not predict those changes. Follow guidance appropriate to your recipe and equipment rather than assuming that everything fits in the same pot.
Seasoning deserves separate attention. The scaler provides arithmetic amounts for every line, but they do not replace recipe-specific judgment. Keep your adjustments in your own notes so you can repeat what works.
Make the list usable
Compare the scaled list with your pantry. Distinguish the amount used in the recipe from the pack size bought at the shop. If you need 1,250 g of rice and buy 2 kg, the difference is stock. It does not belong in the recipe unless you deliberately change the recipe again.
Review every line, especially small quantities. Rounding a small amount to a whole unit can change it substantially. The displayed results keep up to three decimal places; consult the original measurement when greater precision matters. Keep the original list alongside the resized list to follow the method accurately.
Use the ingredient scaler