Each grade represents the amount of processing the syrup has gone through. Grade A is more refined and less useful. Grade B is better and Grade C better yet. However, Grade C is not easy to find and realistically, Grade B will usually be your best choice. Other grading systems, such as Grade 1, 2, or 3, may be used in different countries, but the concept is the same. Just ask your grocer which of the choices is the least refined. Store candy syrup like Aunt Jemima is not acceptable; it is just flavored, empty sugar with no nutritional benefits.