The Pennsylvania Farm Show begins Saturday, which means every foodies’ favorite day – food court preview day – is upon us. The annual Friday tradition brings out hundreds looking for a taste of Farm Show staples: potato doughnuts, vanilla and chocolate milkshakes, deep- fried cheese cubes, mushroom burgers, and those looking try out some of this year’s new food offerings: loaded french fries, limited-edition mint milkshake, and pepper jack grilled cheese, among others.