Culture

A viral challenge has millions naming, feeding and posting daily updates on their jars.

A cozy TikTok challenge asking people to name their sourdough starter and post a daily rise check has spread to Instagram Reels and Threads. Bakeries report a bump in starter sales, and Reddit's baking communities are fielding a wave of beginner questions. The trend is lighthearted, with names ranging from classic to deeply unhinged.