When I shake and win a $4 whopper, I've had very mixed success with substituting the beef patty for a rebel patty. I know it's possible to sub instead of remove beef and then add rebel (+$2) because it's happened a few times.
My question: What is the menu structure on the POS for subbing so that I can avoid paying the surcharge?
Why are you substituting gold standard beef patties that cook really well on barbecues (public?) for soy alternatives. I have it on good authority that soy patties will stick to stainless steel surfaces far worse than beef ones.
Is it because you want to add the soy patty to pumpkin soup?