Root Vegetable and Cauliflower Tagine with Parsley Yogurt

Name: Root Vegetable and Cauliflower Tagine with Parsley Yogurt
Ingredients: 1½ c. plain whole-milk yogurt; ¼ c. Parsley; Parsley; kosher salt; Freshly ground pepper; ¼ c. extra-virgin olive oil; 1 medium onion; 8 clove garlic; 3 tbsp. tomato paste; 1 tbsp. ground cumin; 2 tsp. ground coriander; 2 tsp. crushed red pepper; 1 tsp. caraway seeds; ¾ tsp. cinnamon; 2 lb. turnips; 1 lb. parsnips; 1 can diced tomatoes; 1 qt. low-sodium vegetable broth; 1 pinch saffron threads; 1 lb. sweet potatoes; ½ cauliflower; 2 can chickpeas; ½ c. dried currants; 1½ c. green olives