Potatoes
A bit off topic but...
Many years ago when I was a roadie it took a while before catering was brought along on a tour. 'Food' on the road was usually at the behest - or mercy- of the promoter and usually consisted of pizzas and cheap beer. Early tour catering companies were often chancers who lacked some of the necessary cooking skills, which often led to some confrontations and redecorated kitchen areas..
We reckoned one such nameless company should have had as a moto 'If it can't be made with potatoes, it can't be made at all', such were their limits. The same company carried pallet loads of baked beans when touring Europe too...
Brussel sprouts would have been a luxury.
And celery is most definitely Satan's food of choice.