heir restaurant, Zippy's Giant Burgers, located in the Highland Park neighborhood of West Seattle in a spot that used to be a teriyaki restaurant, serves up juicy burgers on buns that are as soft as pillows. The French fries actually taste like potatoes; shakes come with hand-scooped ice cream; and burgers are made from house-ground beef, hand-formed into patties and served in wax-paper pockets.