Dissolve yeast in warm water with 1 tsp. sugar. Combine with oatmeal mixture. Add three cups of flour and beat with an electric mixer. Add raisins and remaining flour (or as much as possible) to make a stiff batter.
Knead it with the rest of the flour until smooth. (You may not need all of the 5 cups of flour.)
Place in a bowl and then sit in a warm place and let raise for 1.5 hours.
Punch down and then let rest for 10 minutes.
Place on a cooling rack and enjoy with some butter and jelly!