Skirt Steak with Chimichurri Sauce

INGREDIENTS

1 lb

skirt steak (or flank steak), any large parts of fat trimmed

salt and pepper

1/2 cup

parsley leaves (torn from 1 bunch, some stems ok)

1/2 cup

cilantro leaves (torn from 1 bunch, some stems ok)

3/4 cup

olive oil

1/4 cup

red wine vinegar

3 cloves

garlic

1 tsp

red pepper flakes

1/2 tsp

salt

1/2 tsp

pepper