1/2 cup unsweetened cocoa powder
1/2 cup boiling water
2 1/2 teaspoons active dry yeast
2 teaspoons white sugar
1/2 cup warm water (110 degrees F/45 degrees C)
3 cups bread flour
2/3 cup white sugar
1 teaspoon salt
2 tablespoons vegetable oil
1 egg
1 egg yolk

In a small bowl, dissolve cocoa powder in boiling water.
In a separate bowl, dissolve yeast and 2 teaspoons sugar in warm water. Let stand until creamy, about 10 minutes.
Place cocoa mixture, yeast mixture, bread flour, remaining 2/3 cup white sugar, salt, vegetable oil and egg in bread machine pan. Select basic Bread cycle; press Start.