I bought a couple of (sealed) packs of cooked beetroot last week from Tesco's... They have a shelf life of until some time in November (due to the seal & packaging etc), so currently they are residing in a plastic bowl inside their packaging on the top shelf of my fridge. I get cravings for beetroot every now and then, so they are simply waiting for my next craving to kick in, lol...
Or are you referring to the pickled beetroot ? If so, get away, that is the food of the devil lol.. (I don't like food in vinegar hehe).