BIG BOY TARTAR SAUCE RESTAURANT RECIPE: ~ From: "Secret Copycat Restaurant Recipes." ~ Source: BIG BOY.COM. ~ Make our Big Boy Tartar Sauce Restaurant at home tonight for your family. With our Secret Restaurant Recipe your Tartar Sauce will taste just like Big Boy’s. ~ Serve it with fish, of course, but it is also great on french fries, hamburgers, sandwiches, chips and more.