NourmioHow to recalculate a recipe after changing an ingredient
Replace the ingredient's calories, update the cooked batch weight, and compare calories in the same portion before and after.
Subtract the old ingredient's calories and add the new ingredient's calories for the amount you used. Weigh the finished batch again. Divide the updated batch calories by its finished weight, then multiply by your portion's weight if the dish is mixed evenly.
Update the recipe line that changed
Write down the amount of the replacement you put in the dish. If the label gives 140 kcal for the amount you used, put 140 kcal on that ingredient line. If the amount differs from the label serving, scale the figure to match.
Check for other changes you made while cooking, such as adding extra oil. Keep the original recipe so you can see what changed between batches.
Compare the same weight from each finished batch
Suppose the original recipe makes 900 g of finished food at 900 kcal. One ingredient contributes 150 kcal. The replacement contributes 140 kcal, and the new batch weighs 820 g. The figures are hypothetical. Assume both batches are mixed evenly and their calorie totals describe the edible food.
| Batch | Total kcal | Finished weight | Calories in 200 g |
|---|---|---|---|
| Original | 900 | 900 g | 900 × 200 ÷ 900 = 200 kcal |
| With replacement | 900 − 150 + 140 = 890 | 820 g | 890 × 200 ÷ 820 ≈ 217 kcal |
The new batch has 10 fewer calories overall. The same 200 g portion has about 17 more because the finished batch weighs less. Using the old weight in the new calculation would hide that change.
Keep the new yield with the recipe
Use the recipe nutrition calculator with the ingredient values and finished weight for each batch. If the food stays in separate layers or components, work out each part of the plate separately. One average will be weak when portions contain very different amounts of each component.
Save the checked portion in Nourmio with a name you can distinguish from the original. Keeping the ingredient change and yield with the recipe makes the next batch easier to compare.