Hoi Malaeng Puu Southern Thai Style Mussel Satay

Name: Hoi Malaeng Puu (Southern Thai-Style Mussel Satay)
Ingredients: 2 tbsp. tamarind paste; 1 1⁄2 cups coconut milk; 2⁄3 cup fresh grated coconut; 1⁄2 cup Thai red curry paste; 1⁄2 cup minced lemongrass; 1⁄3 cup dark brown sugar; 1⁄3 cup thinly sliced shallots; 2 tbsp. fish sauce; 3 Kaffir lime leaves, stemmed, minced; 1 pandan leaf, tied into a knot; 2 lb. (about 60) large mussels