Pineapple and Pork Tacos With Avocado Crema

Name: Pineapple and Pork Tacos With Avocado Crema
Ingredients: 2 teaspoons sugar; 2 teaspoons ground cumin; 1/2 teaspoon ground coriander; 1/4 teaspoon ground cinnamon; 1/4 teaspoon ground red pepper; 1/4 teaspoon salt; 12 ounces pork tenderloin, called trimmed and cut into 1/2-inch cubes (I use more all the pork tenderloin); 1 tablespoon olive oil (I had to use a little for the extra batches); 1/4 fresh pineapple, cored and sliced crosswise (I use 1 can chunks); 2 tablespoons chopped fresh cilantro; 12 corn tortillas, 6-inch diameter (I use flour); 1 avocado, mashed; 2 tablespoons nonfat sour cream; 2 tablespoons freshly squeezed lime juice; 1/8 teaspoon salt