Grilled Steak Fajitas

lbs flank or skirt steak (, trimmed of fat and sliced into 6-inch long pieces)

fresh lime juice

canola oil

garlic (, minced (1 heaping tbsp))

jalapeno (, seeded, stemmed and minced)

chili powder ((preferably 1 tsp ancho chili powder and 1 tsp regular chili powder))

ground cumin

paprika

Salt and freshly ground black pepper

fresh cilantro (, left whole)

bell peppers sliced into 1/2-inch thick strips ((2 for lesser amount of beef and 3 for greater))

large yellow onion (, sliced into 3/4-inch thick strips)

For serving:

tortillas flour or corn tortillas ((8 for lesser amount of steak and 12 for greater))

Lime wedges

Avocado slices or guacamole

Pico de gallo or salsa (, sour cream, shredded Monterey Jack cheese or crumbled Queso Fresco (optional))