How do I prevent opened canned tuna from going stale? I want to start buying those big tuna cans to save on costs, but I know that after one day at the fridge opened tuna becomes stale. It loses its tangy flavor and gets a rubbery texture. Is there a way to prevent that?
At the very least, transfer to a food storage container (smallest possible) and cover...for more than a day or two, Ziploc bag, with as much air removed as possible (use water displacement method)...or vacuum seal.