[header] How to roast jalapenos [title] Prepare a gas or charcoal grill. [step] Turn a gas grill on to medium-high. If you're using a charcoal grill, heat a chimney 1/2 to 3/4 full of briquettes until they're ashy and hot. 
Dump the hot coals onto the grate. [title] Rinse any dirt off of the jalapeños.