Pulled Pork w/ Roasted Rhubarb Sauce

Ingredients

• 2 kg bone-in pork shoulder
• 2 Tbsp olive oil
• 1 tsp EACH allspice, garlic powder, coriander & salt
• 1/2 tsp pepper
• Grated zest of 1/2 large orange
• 4 cups rhubarb, coarsely chopped
• 3 cloves garlic
• 1 cup water, more if needed
• 3 Tbsp balsamic vinegar
• 1/2 cup brown sugar
• 1/4 cup ketchup
• 1 Tbsp Worcestershire sauce
• 1 Tbsp chili powder
• 1/4 tsp cinnamon
• dash of cayenne pepper
• salt & pepper to taste
• 2 cups kohlrabi, peeled & shredded
• 1 cup carrots, shredded
• 1 1/2 Tbsp cider vinegar or seasoned rice wine vinegar
• 1 Tbsp oil
• 1 1/2 tsp sugar
• 12 6-inch corn tortillas