These effects are derived from two fundamental observations of physics: a steady current creates a steady magnetic field described by Oersted's law, and a time-varying magnetic field induces an electromotive force in nearby conductors, which is described by Faraday's law of induction.
Butter & salt. Preheat the oven to 400 degrees. Husk the corn, wrap each ear in foil, adding 2 teaspoons of butter to each packet. Bake for about 25 minutes or roast the foil-wrapped corn over hot coals turning once during the cooking. Serve with more butter and salt.
Save. How to Roast Corn. There is nothing like adding fresh roasted corn to a meal. But if you think roasting corn is only something to do in the summer on the grill than you have to try this recipe. It will warm up those winter nights with some summer zest. Here's a great recipe to roast corn.