How to log a meal kit when you change the portions
Use a real meal-kit label to compare calories as packaged and as prepared, scale the portion you ate and avoid counting an ingredient twice.
Choose the nutrition column that matches how you made the meal. Find the calories for one serving and multiply by the fraction you ate. Count any extra oil or toppings that aren't covered by the value you used.
Check which version the calories describe
The Home Chef example panel for Pear and Blue Cheese Pizza lists a serving of 361 g and about two servings per kit. It gives 770 kcal as packaged and 830 kcal as prepared for one serving. Its footnote says the packaged value describes raw ingredients without salt or olive oil.
For the meal as the label describes it after preparation, start with 830. When you use a prepared value, check what it includes before entering oil again. What came in the box can differ from what the nutrition calculation covers. Blue Apron says that its figures include eggs required by the recipe, even when you supply them from home.
Work out your share of one serving
Say you ate three quarters of one prepared serving of the pizza. If your pieces had a similar mix of crust and toppings to the whole serving, 830 × 0.75 gives 622.5 kcal, or about 623 kcal for your entry. Three quarters of the listed 361 g is 270.75 g, about 271 g. This is an example using that panel’s serving weight, with no claim about how much a kit you cook will weigh.
If you split the toppings unevenly or one plate gets extra cheese, the same fraction may fit the crust and miss the toppings. When you know their separate amounts, track those parts separately.
Record extras after choosing the starting value
Check the recipe and version on your own kit. If you add something outside the prepared value, use the label for the amount you actually added. If the kit arrived with a different protein or you swapped a topping, use the matching nutrition information when available. The difference between 770 and 830 on the example label doesn’t tell you how much oil ended up on your plate.
In Nourmio, enter the estimate for the portion you ate. Keeping an extra topping as a separate line makes it easier to correct the amount later.