Kuhn Rikon - Kuhn Rikon Nonstick Silicone Tornado Whisk - The Kuhn Rikon Silicone Tornado Whisk is safe for cast-iron or nonstick surfaces and won&#039;t scratch surfaces. These flat whisks are ideal for covering large surfaces of shallow skillets or roasting pans. The wires blend the ingredients by pulling them in from all sides into the center.