Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      package       (or 1 tablespoon) active dry yeast
   2      tablespoons   sugar
     1/4  cup           warm water (110 to 115 degrees)
   2      cups          all-purpose flour
   2      cups          whole wheat flour -- (up to 2-1/2)
     1/2  teaspoon      salt
   1                    egg
   2      tablespoons   vegetable oil
   1 1/4  cups          water
   1                    egg -- beaten
   1      tablespoon    poppy seeds

Preparation:

Dissolve the yeast and sugar in the 1/4 cup of warm water. Let stand for 5 minutes. Combine the flours and salt in a mixing bowl. Make a well in the center of the flour mixture and add the egg, oil, yeast mixture and remaining 1-1/4 cups of water. Mix well. Knead the dough on a floured board, adding more whole wheat flour until the dough is smooth and elastic. Place in an oiled bowl. Cover with a damp towel and let rise until doubled, about 1 hour. Divide the dough into three parts. Roll each third into a strip about 15 inches long. Braid the strips together and place on a lightly-oiled baking sheet. Brush with the beaten egg. Sprinkle on the poppy seeds. Cover and let rise until doubled. Bake in a 375-degree oven for 40 to 45 minutes, or until golden brown.