Barbecue Brisket Sliders with Creamy Coleslaw Gelson's

Ingredients

• - 4 to 5 lb flat cut beef brisket
• - ½ cup plus 1 Tbsp brown sugar, divided
• - 2 Tbsp smoked paprika
• - 1 Tbsp cumin
• - 1 tsp onion powder
• - 1 tsp garlic powder
• - 1 tsp mustard powder
• - 1 Tbsp salt
• - 1 Tbsp plus 2 tsp black pepper, divided
• - 6 oz lager-style beer
• - 2 garlic cloves
• - ½ cup apple cider vinegar
• - 1 ½ cup ketchup
• - 1 tsp cayenne pepper
• - 2 Tbsp Worcestershire sauce
• - 24 slider buns
• Cilantro leaves, for garnish
• - ½ head green cabbage
• - ½ head red cabbage
• - ½ red onion
• - ¾ cup mayonnaise
• - 1 Tbsp prepared horseradish
• - 2 Tbsp sugar
• - 2 Tbsp apple cider vinegar
• - ¼ cup sour cream
• - Salt and black pepper, to taste