Classically styled with a polished stainless steel exterior and a satin finished interior, the Calphalon Tri-Ply Stainless Steel 1-qt. Sauce Pan is designed with three layers to ensure even, consistent heating. A heavy-gauge aluminum core surrounded by stainless steel provides excellent heat conduction for browning and searing, while giving you enhanced control of the cooking process. The small saucepan, or butter warmer, is perfectly sized for reheating foods, boiling an egg, or making single servings of soup or sauces. The bottom interior is sloped for easy stirring.