Follow basic steps 1-7 for making dough (see page 16 for BBCC-X20 model and page 17 for BB-CEC20 model).
Remove dough from the Baking Pan and divide into 10 equal portions. Shape each dough into a ball, place on greased baking pan, cover with a cloth and allow to rest for 20 minutes.
Take each dough ball and use thumb to make a 1-1/2 inch hole in the center.
Cut 10 sheets of parchment paper, place on a baking sheet, and place dough ball onto each parchment paper. Lightly spray water on the dough and allow to rise at 95°F for 30 to 40 minutes, or until size doubles.
Bring 3 quarts of water to a boil, place dough from Step 3 in the boiling water along with the parchment paper, and boil each side for 30 seconds. The parchment paper will come off during boiling.
Grease baking pan, place dough from Step 4 and brush lightly with egg yolk and water mixture.
Sprinkle with poppy or sesame seeds, diced onion, garlic chips, or shredded cheddar cheese if desired.