Use the Kilner Mayonnaise and Sauce Jar Set to make and store sauces and homemade mayonnaise. The stainless steel mesh plunger combines the ingredients in the jar, and the oil dish controls the flow of oil into the mixture. The glass jar has a 12-ounce capacity to hold multiple servings of mayonnaise. The stainless steel plunger and oil dish are durable and won't react with food. Dishwasher safe.