Carrot Cake with Cream Cheese Frosting

Name: Carrot Cake with Cream Cheese Frosting
Cuisine: American
Ingredients: 2 c packed freshly shredded carrots; 1 c sugar; 1 c light brown sugar; ¾ tsp salt; 1⅓ c canola oil; 4 eggs, beaten; 2¼ c all-purpose flour; 1 tsp baking powder; 1 tsp baking soda; ¾ tsp cinnamon; ½ tsp freshly grated nutmeg; ½ tsp ground ginger; ¼ tsp ground cloves; 2 8-ounce bars cream cheese; 3 tbsp flour; 3 tbsp corn starch; 1 c half and half; pinch salt; 1 tsp vanilla extract; ½ c powdered sugar; 2 c chopped, roasted pecans or walnuts (optional)