Mix chile powder through ground coriander in a small bowl. Set aside. *See note
In a large bowl, tear apart ground beef into smaller bits. Toss gently with spice mix (or taco seasoning).
Divide ground beef into fourths. Hand form 4 large patties. Evenly divide hot sauce on the tops of each patty. Arrange on a plate and place into the freezer for 10-30 minutes.
Heat grill to medium-high heat. Grill hamburger patties for 2-3 minutes per side on direct heat, then remove to indirect heat until desired doneness. For the last minute, add a slice pepper jack cheese to each patty.
Remove from grill and allow to rest for 3-4 minutes before assembling.
To build your massive Taco Burger, place patty on Kaiser Roll, top with pico de gallo, avocado, sour cream and jalapenos.
If you've tried this recipe, come back and let us know how it was!