Combine sauce ingredients in a small bowl. Whisk until well combined. Adjust seasoning to taste. Set aside.
Combine cucumber salsa in medium sized bowl. Stir to combine. Adjust seasoning to taste. Set aside.
Preheat a grill pan and coat with non-stick spray or olive oil. Cook patties for 3-4 minutes per side until cooked through.
Assemble pita's by adding greens, chopped TRIBALÍ patties, and cucumber salsa. Top with tzatziki sauce and garnish with fresh mint if desired.