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Heat control, searing, frying, baking — what iron does better than anything else in the kitchen.
Cast Iron Cornbread Without Buttermilk (What to Use Instead) Sour milk with lemon or vinegar, thin plain yogurt, or use plain milk and adjust the leavening — why each works, and the hot-skillet pour that makes the crust. 
Can You Use Cast Iron on a Glass Top Stove? (Yes — Here's How) Yes, cast iron works on a glass top stove — and it's the ideal pan for induction. The real risks ranked, plus the lift-don't-slide technique that prevents them. 
How to Sear Steak in Cast Iron (Start to Finish) A dry steak and a properly preheated pan do most of the work. The full method: salt timing, the water-drop test, flip cadence, butter baste, rest, aftercare.