In the largest, seriously - the biggest- mixing bowl that you have, blend together the flour, salt, sugar, baking soda, and baking powder. Add in the cereal and raisins and mix well.
Add in the eggs, oil and buttermilk and thoroughly combine
Fill muffin tins about 3/4 full and bake 10 - 12 minutes, or until a dry spaghetti comes out with crumbs, but no batter
Notes
Do not over-bake these muffins! This has been slightly adapted from Granny's original recipe by reducing the amount of sugar.