Made of durable, crack-resistant polypropylene, the Comfy Package Complements 100 Cups with Lids 1 oz. translucent plastic souffle / portion cup is a sturdy choice for serving anything from salad dressing to whipped butter. It can safely transport side sauces such as ranch dressing, marinara, salsa, and more, and its translucent construction allows you to easily see the cup's contents.