Wynkoop has pretzels. And other tasty treats. This is one of my places to grab a snack in a mid-day beer tasting. Their flights are done on different train paths. They have their own beers on tap. And they always have a root beer, which is pretty good too. I enjoyed my visits here and suggest you stop in while in Denver. Just beware, the bathrooms are downstairs which can be more challenging in a day of drinking.
Check out their website for more info.