The phrase "things potato" refers to anything related to or involving potatoes. It is a way of speaking about various aspects, activities, or items connected to potatoes. Full definition
The reintroduction of the Cheesy Tots isn't just a miracle though, it's because of us, fans of all things potato and cheese. (businessinsider.com)
Also — I am in love with all things potato, and this salad sounds delicious. (withfoodandlove.com)
So, in honour of all this wonder - veg, I've teamed up with Michelle at Utterly Scrummy to launch a blog linky for ALL THINGS POTATO! (family-friends-food.com)