Shawn Bergin's tiny sourdough bakery is only open from 8 a.m. to whenever the goods sell out on Fridays, Saturdays and Sundays, so a line often forms before 7:30 on those mornings. Neighbors appear quickly to abscond with rustic country loaves, delicate croissants, decadent morning buns and whatever else Bergin is baking that day. So showing up early is key, and you can also grab a cup of coffee once you're in the door. Bakery Four expects to add Thursdays soon, and later this year, Bergin is making the move to a bigger space on Tennyson Street to share the love with more of Denver.