Z's Oyster Bar & Steak House | 89 followers on LinkedIn. Z's Oyster Bar & Steakhouse is a Triple A rated 4 Diamond restaurant in addition to being a locally rated 4 star restaurant. Z's steaks are selected from Prime mid-western aged beef, hand cut to order and cooked the way you like it. Our seafood is purchased directly from "Day boat fishermen", prepared simply and cooked to perfection.