Bison Burgers with Zesty Marjoram-Tomato Relish

1. Prepare the Grill

Start by preparing your grill. If you’re using a charcoal grill, let the coals heat until they are ashed over; for a gas grill, preheat it on high.

2. Sauté Onion and Serrano Chiles

While the grill heats, warm 4 teaspoons of olive oil in a heavy small frying pan over medium heat. Add three-quarters of your chopped onion and two of the minced serrano chiles. Sauté them for about 5 minutes until the onion is tender.

3. Prepare Burger Patties

In a large bowl, mix the ground bison with the sautéed onion mixture and half of the minced marjoram. Form the mixture into patties about 1 inch (2.5 cm) thick.

4. Prepare Tomato Relish

In a small bowl, combine the quartered cherry tomatoes, the remaining onion, one minced serrano chile, and the rest of the marjoram. Add fresh lime juice, kosher salt, and freshly ground pepper to taste. Mix thoroughly.

5. Grill the Patties

Once your grill is ready, sprinkle the patties with kosher salt and freshly ground pepper. Place them on the grill and cook for about 3 minutes on each side for rare, or longer if you prefer your burgers more done.

6. Serve the Burgers

Transfer the grilled patties to warmed plates. Top each burger with a generous spoonful of the tomato relish. Serve immediately.