I am speaking theoretically here, but isn't it because the pickled veggie is a topping or small addition and not the main part of the meal? In the screens you provided, working with the pickled vegetables only work when they are less than the main ingredient. It would make sense that the meals only work when there's a small adition of brined veggies. I can't really tell if it's supposed to work like that or not though, I never pickle anything!