In any case, for later calculations, it makes sense to base things on always the same size (i.e., 100 g, 1 serving, etc.). Otherwise you’ll find that combined calculations, say combined GL or calories for a serving or complete recipe, will turn out almost impossible.
That’s the main reason I used “100 g” for GL and cal, and “1 portion” as a base for the recipes.
I know this can be a lot of work. Maybe if most of your recipes are already in Paprika, you can have that calculate the values and then copy to Obsidian?