Barbecue Spiced Roasted Drumsticks

Name: Barbecue Spice Roasted Drumsticks
Yield: 4 - 6
Ingredients: 2 1/2 Lbs chicken drumsticks; 1 Tbsp kosher salt; 1 1/4 tsp packed brown sugar; 1 1/4 tsp pepper; 1 1/4 tsp ground coriander; 1 1/4 tsp ground cumin; 1 1/4 tsp garlic powder; 1 1/4 tsp onion powder; 1/2 tsp smoked paprika; 1/8 - 1/4 cayenne pepper; 2 Tbsp + 1 tsp warm tap water; 2 Tbsp + 1 tsp EVOO; 3/4 cup mayonaise; 2 Tbsp cider vinegar; 2 tsp granulated sugar; 1/2 tsp prepared horseradish; 1/2 tsp kosher salt; 1/2 tsp pepper; 1/2 tsp cayenne pepper