- Landline Doughnuts & Coffee makes amazing Potato Doughnuts - from scratch, by hand with fresh mashed potatoes. Our glazes are seasonal and made from fresh locally sourced produce. We also have a full service espresso bar, soft serve Dole Whip (Pineapple or rotating other fruit flavors). There is plenty of seating to sit and enjoy our doughnuts with friends or family, celebrate a win - or work on a project. The atmosphere is fun and nostalgic. Our space is the oldest brick building in Longmont - the Emerson Buckingham Bank. Check out the history - enjoy the original exposed brick and nearly 150 year old marble tile and hard wood floors. We have working rotary phones - for you to call someone special on.