Allow recipe modification

I often find recipes I really like, but because of personal preferences (medical too) I won't follow it to the t: instead of almond milk, I'd use cow milk, or homemade kefir; I'd add lessen the red meat but keep the rest of the ingredients' ratio the same; I'd take the (complex) filling for a crepe and put it on a basic pancake. It's tiring to screenshot and copy and paste the recipe to just its filling or base so I can track my stats (not just calories) more accurately.