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What causes a stovetop to crack?
When oversize pots are used on surface units of stoves for purposes such as canning, the heat is trapped next to the stove top. The intensity of the heat may cause the range top to crack and be discolored. The following precautions may be taken. Keep the pot level on the unit. A trivet placed at one edge may be necessary. Use the least amount of heat necessary to keep the water boiling in boiling water bath processing and the pressure stable in pressure canning. A dark or dull finished canner may reflect less heat back to the surface of the range. Use a canner that has a flat bottom. Some manufacturers make a special unit for use with large pots and canners. Check with the dealer if interested. PREPARED BY: Angela M. Fraser, Ph.D., Associate Professor/Food Safety Specialist, and Carolyn J. Lackey, Ph.D., R.D., L.D.N., Professor/Food and Nutrition Specialist, North Carolina State University (August 2004)