Today there's the problem that mods which dynamically write the ingredients for a food item into the NBT cannot be controlled correctly. For example the decker sandwiches of VanillaFoodPantry can be made of many different ingredients and accordingly change their hunger values.

It would be nice if one could enable an option in food groups where an item with different NBT values would be treated as different items.

Additionally one may be able to exclude specific NBT tags, because mods like Food Funk add their data to the items. You don't want e. g. the status of rot to decide about your item.