Blackberry Muffins

Directions

1. 1
   Sprinkle berries with little of flour.
2. 2
   Add remaining flour with other dry ingredients; melt butter and combine with milk and beaten egg yolk.
3. 3
   Mix dry and liquid mixtures quickly and fold in stiffly beaten egg white.
4. 4
   Drop by spoonfuls into greased muffin tins.
5. 5
   Bake 15 to 20 minutes.
6. 6
   Yields 12 to 15 muffins.