Originally Grandma Spencer's recipe — our three flavors of mustard are a family-owned recipe that are packed with delicious flavors every member of the family will enjoy.
In 1935 my Grandmother Adora Spencer created the original sweet and spicy mustard. My grandfather loved it so much that we decided to name it after him — but Adora should really be getting all the credit.
In 2010 we launched the Original family recipe because it's just too good to keep to ourselves. In October of 2014 we expanded our line with the horseradish and the hot and spicy to ensure that there was a flavor for almost anyone!
Get to know why you should go with us
None of our products contain gluten so we are safe for the whole family.
Save when you stock up! Two and three jar specials available.
Check out our #events section and come see us in person!
Mustard is rich in protein, fiber, vitamin C, and powerful antioxidants! Another great reason to put it on everything.
We offer free tastings at every live event! Enjoy on pretzels, burgers, or really anything!
We are offering a 15% off special on all web site orders of two or more jars. Please use the code "GSMustard2023" when you place your order.
Grandpa Spencer's donates a portion of your sales to the Karen Weidinger Foundation. KWF provides support to women with breast cancer in the Saint Charles, Missouri area. If you would like to make a donation to Karen's Foundation please click the banner below.
Want to carry our mustard in your stores?
Become a partner and help us grow! View our partners page to see where to buy our mustard in store or send us an email and let's work together!
Send us an email and let us know where you would like to sell our mustard!
Contact UsTry each of our three delicious flavors! Each is flavorful and unique — there's truly something for everyone.
Check our progress over the years
137,020
Pretzels Consumed
51,212
Jars Sold in 2021
45
Events in 2021
4,291
Happy Customers
Meet the family!
The mustard king of Saint Louis! Charlie grew up eating the original recipe in his mom's kitchen! Owner and Salesman, you'll meet Charlie if you go to any live event.
Devoted wife and supporter, enhancing Grandpa Spencer's Mustard with warmth, bolstering our brand and customer interactions.
Charlie and Mona's only son and somewhere between tech-guy and CTO. He works behind the scenes to make online ordering seamless.
The girl behind the camera. Ciara does our product photo shoots and sometimes will come to shows to snap some pictures. Say Mustard!
Discover who's talking about Grandpa Spencer's
These locally made mustards have been known to convert even the condiment's top critics... Grandpa Spencer's Gourmet Mustards The Grandpa Spencer's Gourmet Mustards original Sweet and Spicy mustard was developed as a family recipe in 1935 and finally sold at the St. Charles farmers' market for the first time in 2010. Since then, the team has developed horseradish mustard and the award-winning Hot and Spicy mustard. Read More!
Whether you're seeking a new mustard to complement your New Year's ham, or just a great condiment to send your brown-bag lunches to the next level, St. Louis has plenty of good options. Stop by local farmers markets to sample two great family recipes. Or make one of your own, with fresh mustard seed from the spice shop at the Soulard Farmers Market. Read More!
Have you heard about Grandpa Spencer's Mustard? This tasty mustard out of the St. Louis area is based on an old recipe from Grandpa Harry Spencer. The family recipe has been passed down through the generations. Read More!
Just in time for all the hamburgers, hot dogs and brats that will adorn thousands of grills this summer, we give you our taste test of 15 mustards. I started out by tasting all 15 straight up, gauging each one's heat on a 0-5 scale and sketching out profiles of flavor and texture. Then other members of our staff tasted several by dipping the St. Louis classic, Gus' pretzels. Read More!
Charlie Adams will be one of more than 120 artisans and crafters at the 21st annual Missouri Botanical Garden's Best of Missouri Market this weekend. Searching for quality regional products begins with shopping the best markets. Consider the best of the best — the Missouri Botanical Garden's Best of Missouri Market. Read More!
Questions or concerns?
If you have a question or something just doesn't meet your standards, please reach out and we will do what we can to make it right.