Juicy Grilled Turkey Burgers

slightly adapted from Cook's Illustrated

1.5 pounds ground turkey
1 tablespoon unflavored gelatin
2 tablespoons low-sodium chicken broth
4 ounce can of white button mushrooms, drained
1 tablespoon soy sauce
Pinch baking soda
1/2 teaspoon garlic powder (optional)
1/2 teaspoon onion powder (optional)
2 tablespoons vegetable oil, plus extra for brushing
Kosher salt and freshly ground black pepper
6 large hamburger buns

If Grinding your oun turkey, cube it 1/2 to 1 inch and freeze in a single layer for 35 -45 minutes until firm and hardened around edges.  Process 1/2 pound at a time in a food processor 18 to 22 pulses redistributing a couple tomes until ~ 1/8 inch pieces.

Place ground turkey in a large mixing bowl. Pulse mushrooms in a food processor, about 7 pulses, until coarsely chopped and set aside. Combine gelatin and broth in a small bowl and let soften, about 5 minutes. 

Add the gelatin, soy sauce, baking soda 1/2 cup of ground turkey and powders to the processor. Process for about 2 minutes until smooth, then drizzle in oil for additional 10 seconds or so. 

Add mushrooms to processor and pulse to combine.

Return processor contents to mixing bowl, combine with the rest of the ground turkey and use hands to evenly combine.

Divide meat mixture into 6 balls. Flatten into 3/4 inch thick patties, about 4 inches in diameter; press shallow indentation into the center of each burger to ensure even cooking. (Lay on waxed paper, firm in freezer about 20 minutes.)???

On a gas grill, preheat for 15 minutes, then leave primary burner on high and turn off the rest. Clean and oil cooking grate. Brush both sides of patties with oil and season with salt and pepper. Place burgers over hot part of the grill and cook until burgers are well browned on both sides and register an internal temperature of 160°. This should take about 4-7 minutes per side. Transfer burgers to a plate and rest for 5 minutes. While burgers rest, toast buns over hot side of the grill. Transfer burgers to buns, add desired toppings and serve.