Pan Material Changes How Evenly Heat Spreads
Copper and aluminum conduct heat far faster than stainless steel or cast iron, spreading it evenly across the whole cooking surface and responding almost instantly when you change the burner — which is why they're prized for delicate sauces that need quick, precise control. Cast iron and stainless conduct more slowly and unevenly (hot spots directly over the burner) but hold heat longer once they're up to temperature, which suits searing and high-heat cooking where sustained heat matters more than instant responsiveness.
Sources & methodology: These tips draw on established food-science references —
Harold McGee's food-science writing, America's Test Kitchen /
Cook's Illustrated testing, Serious Eats'
technique reporting, USDA food safety guidance,
and peer-reviewed food-safety research (including UC Davis
cutting-board studies) — not reworded recipe-blog consensus.