
For this recipe, use 50% Ground Chuck and 50% Ground Sirloin for best results. You can, however, substitute regular ground beef and still get satisfactory results. Select beef that has significant marbling of fat, about 80-85% lean.
Don't be timid about making your own fire-roasted peppers. Since we will be grilling the hamburgers anyway, you can use the same heat distribution to make the peppers. If you must, substitute any high-quality store brand. But give it a try, you won't be disappointed by making your own.