Vinegar flavored with malagueta peppers is used at Brazilian steakhouses like Fogo de Chão, but you can use fresh habaneros, jalapeños, serrano peppers, or dried chiles like ancho or guajillo. Use twice the volume of white distilled vinegar to fresh peppers, or 10 to 15 grams of dried chiles for every 2 cups of vinegar, and check if it's ready after a week or two.