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USING THE SURFACE COOKING ZONES contd.)
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• Select a pan that is about the same size as the
surface cooking zone. Cookware should not
extend more than 1 inch (2.5 cm) outside the zone,
• For best results and greater energy
efficiency, use only flat-bottomed cookware that
makes good contact with the surface cooking
zone. Cookware with rounded, warped, ribbed
(such as some porcelain enamelware), or dented
bottoms could cause uneven heating and poor
cooking results.
• Cookware designed with slightly indented bot-
toms or small expansion channels can be used.
• Cookware with a non-stick finish has heating
characteristics of the base material.
• Check for rough spots on the bottom of metal or
glass cookware which will scratch the radiant glass
surface.
• Use fiat-bottom cookware for best heat
conduction from the surface cooking zone to the
cookware. Determine flatness with the ruler test.
Place the edge of a ruler across the bottom of the
cookware. Hold it up to the light. No light should be
visible under the ruler. Rotate the ruler in all
directions and lookfor any light.
• Do not leave empty cookware, or cookware which
has boiled dry, on a hot surface cooking zone. The
cookware could overheat, causing damage to the
cookware or the surface cooking zone.
CHARACTERISTICS OF COOKWARE MATERIALS
The pan material affects how fast heat transfers from the surface cooking zone through the pan material and
how evenly heat spreads over the pan bottom. Choose pans that provide the best cooking results.
Aluminum • Heats quickly and evenly.
• Use for all types of cooking.
• Medium or heavy thickness is best for most cooking.
• Used as a core or base in cookware to provide even heating.
Cast iron • Heats slowly and evenly.
• Good for browning and frying.
• Maintains heat for slow cooking.
• Can be coated with porcelain enamel.
Ceramic or • Heats slowly and unevenly.
ceramic glass • Use on low to medium settings.
• Follow manufacturer's instructions.
Copper • Heats very quickly and evenly.
• Used as a core or base in cookware to provide even heating.
Earthenware • Can be used for cooktop cooking if recommended by the
manufacturer.
• Use on low settings.
Porcelain enamel-on-steel or =• See cast iron and stainless steel.
enamel-on-cast iron
Stainless steel • Heats quickly but unevenly.
• A core or base of aluminum or copper on the cookware provides
even heating.
• Can be coated with porcelain enamel.
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