[scandinavegan]

Unless I misunderstand you, I solve this in MyFitnessPal by first creating a recipe with all ingredients, including water, then selecting the number of portions so that each portion is (close to) 100 grams. That way I can have 230 grams later and just enter 2.3 portions.

What I thought you meant when you talked about entering ratios of food that you can scale up and down is that at first I created "Spaghetti and sauce" recipes, with a set amount of spaghetti and sauce. But then I may just keep the left-over sauce in the fridge, and next time I'll have a different amount of pasta. Since the recipe is fixed, I can't easily change the ratios of the recipe as I add it, but would have to create a completely new recipe with a different amount of pasta.

I've now started creating recipes for only the sauce part, and will enter the pasta separately for each meal. That makes it more flexible, but annoying for recipes where I always have the same things toghether.

One thing that I miss from the recipe handling in MyFitnessPal is that when I'm in the diary day view and want to add a recipe to a meal, I can't see the list of ingredients or how much it is of each. I have to go to the recipe section first to be able to see that. For example, I have a protein shake I've added as a recipe that's 250 g of plant-based milk and 45 g of protein powder, but I always forget if it's 40, 45, or 60 grams of powder. I would prefer to be able to add the recipe to a meal and from the diary see the amounts of different ingredients in the recipe, like a click-to-expand-the-recipe feature.