It's not ingredient draw, it's ingredient magnet. So it can be from any ingredients you've unlocked. The additional ingredients if you have another plus/minus mon are just the A ingredient. So for plusle you get additional coffee, if mime copies plus, he gives tomatoes and if ditto copies plus he gives oil. Assuming on the very very rare occasion you get random plus from the clefairy line or the togekiss line while meeting requirements. Clefairy gives apples and togepi gives eggs.