Have you bought the set at professional group, everything happened very quickly and I would hereby like to emphasize a great service to boot, in terms of the order. Supplied had a few flaws, called and explained the situation. Then I received replacement the defective goods and in turn I forgive 5 stars for the great service. Tried first the pan, the result of the roast properly. Me and my wife says it, because almost no oil or other is necessary.