Ours prefer fruit to veg (spoilt piggies

) any kind of fruit - melon, grapes, pineapple, kiwi fruit, bananas, apples.........just about anything

But they will eat carrots, turnip/swede, brocolli and cabbages if there's nothing else on offer.
A camping stove with a dedicated pot & knife kept outside somewhere (garage/shed) does the trick for cooking up potatoes, mine LOVE cooked up sweet potatoes - go mad for them so they do

HTH
Karen