Unassuming and seemingly quiet from its facade, Rosemarie Bakery might surprise bread and cookie consumers of the borough. This bustling behind-closed-doors Port Richmond operation turns out Kaiser rolls, artisan Italian loaves, three-footers, heroes and cookies -- by the thousands.

To grasp the scale here, 50,000 pounds of flour is pumped from a tractor trailer into the bakery each week. Joe Silvestro, the baker himself, walks a visitor through the process. (Check out the video above to follow the impressive step-by-step process.)