Combine all the dough ingredients and knead until smooth and elastic; about 15 minutes by hand.
Place the dough into a bowl, then cover and let rise for 1-2 hours, or until doubled in volume.
Once the dough has risen, punch it down.
For a loaf shape, flatten the dough into a large rectangle. Sprinkle over 1/2 cup blueberries, then roll the dough up into a tight log. Place into a baking pan of your choice; I used a 6.375 x 3.75 inch junior loaf pan. Let the dough rise, covered, for 30-45 minutes. Once risen 1.5x in volume, place onto a steamer basket into a pot filled with cold water.
Cover the pot and turn the heat to high; once water is at a full boil, turn the heat down to medium-low. From this point, continue cooking for 30 minutes.
Turn off the heat and wait 3 minutes before removing the lid of the pot, careful not to let any water drop onto the loaf. Let the loaf cool slightly before serving.