For Charred Peppers:
Grill: Heat a grill to medium-high. Place a pepper (or peppers) on the grates, close the lid and let it char for 5 minutes. Rotate and repeat this process until all sides are charred. After 12 to 15 minutes, the skin should be black and blistered.
Gas stovetop: Using metal tongs, hold the pepper over a medium-high flame, rotating it to create an even char.
Oven: Preheat the broiler to high and crack the oven door. Place a washed pepper on a foil-lined, rimmed baking sheet and slide it under the broiler, rotating it every few minutes until it is charred.