True Stories:
1) The sriracha hot mustard here is the bomb but you shouldn't let your dogs have ANY, even to get them to stop licking at your dinner plate, because they WILL throw up.
2) Check the hours for this place because it may just seem like they are REALLY slow, but it may actually be that they are CLOSED. Sorry National Mustard Museum! And thank you for being so polite even though we were obliviously being those guys.
Overall, this place is pretty magical if you are a mustard fan. Or if you want to do something completely random and semi-interesting. Or if you just like being overwhelmed with choices you didn't even know existed.
The "museum" part is just a quirky collection of mustards and mustard pots which I didn't even know were a thing (*The More You Know!*) but the entire upstairs is covered in mustards to buy, mustards to try, and mustard accessories and gifts. Yes, those exist too...who knew? And the kicker of the whole place is there are employees there who are all mustard connoisseurs (not sure if they were born that way or were trained but either way they are useful) so if you need a suggestion or are looking for some random mustard you tried at your boyfriend's sister's BBQ back in the day, they can help (True Story #3).
Check 'em out even if it's only to get yourself an accessory that says "Poupon U". Hahaha. I'm a child, but those gifts were THE BEST.