In a blender or large food processor, combine the 3/4 cup orange juice, 1/4 cup lime juice, 1/4 cup lemon juice, 1/4 cup avocado oil or other neutral oil, 1/4 cup low sodium soy sauce, 1/4 cup water, 1/4 cup light brown sugar, coarsely chopped 33 cloves fresh garlic, 2 chipotle peppers in adobo sauce, 2 tablespoons white onion, 2 tablespoons fresh cilantro leaves, 1 teaspoon dried oregano, 1 teaspoon ground cumin ,1/2 teaspoon ground black pepper and 1/2 teaspoon coarse sea salt. Blend well.
Remove about 1/3 of the marinade, reserving for dipping later. Place the rest of the marinade into an airtight plastic bag or shallow dish along with the 2-2.5 pound flank or skirt steak. Cover and chill for 2-24 hours.
Remove the meat from the marinade and discard. Grill or sear as desired to your desired level of doneness.
Heat the reserved marinade and spoon over hot beef.
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