TikTok users flood mailbox with requests for 177-year-old Oregon Trail sourdough starter

TikTok users have flooded the mailbox of a group of baking enthusiasts from Greeley, Colorado, asking for some of their 177-year-old sourdough starter.

Since 2000, Mary Buckingham has guarded the mysterious sourdough starter. She’s one of many volunteers acting as a gatekeeper of a special mailbox where any baker worldwide can send a self-addressed, stamped envelope. In return, they can receive a free sourdough starter that reportedly traces back to the historic Oregon Trail.

Buckingham relocated to Greeley, Colorado, in mid-2022, taking the mailbox with her. Every winter she typically receives between 30 and 150 weekly requests, according to The Denver Post. After a video about the 177-year-old sourdough starter went viral on TikTok in January, Buckingham told the outlet that she had “an unbelievable flood” of mail.

“This week, we have well over 1,000 requests coming in,” Buckingham revealed. “It’s insane.”

Ordinarily, she collects the mail and makes sure that each envelope is adequately filled out and stamped before sending the envelopes to a “grower” in the Pacific Northwest who maintains the starter.

This person typically spreads the starter onto wax paper, dries it out, and then divides it into smaller pieces to grind them up into a grainy mixture that can be mailed.

Buckingham noted that the starter is popular amongst bread enthusiasts for a reason. “It’s strong, it’s stable,” she said. “It raises bread very nicely, and it’s everything you want in a starter.”

The highly-coveted sourdough starter was first distributed by the late Carl Griffith, an Oregon native who reportedly inherited the artifact after his parents died.

In a brochure Griffith wrote in 1996, he alleged that his ancestors brought the starter with them while traveling west from Missouri along the Oregon Trail in 1847, and ever since, the living heirloom has been passed down from generation to generation.