FirstBuild, King Arthur unveil Indiegogo-backed Sourdough Sidekick to automate starter

A countertop appliance aims to take the guesswork out of sourdough starter maintenance by automating feedings and timing so bakers can focus on baking. FirstBuild, GE Appliances' co-creation community, teamed with King Arthur Baking Company to introduce the Sourdough Sidekick, an Indiegogo-backed device designed to keep starter active, reduce discard, and deliver recipe-ready starter on demand.

The Sidekick includes an Auto mode that micro-feeds starter on a schedule calibrated to produce a ready-to-use starter at a chosen date and time, a feature positioned to eliminate the need for daily attention. The product announcement states the Auto mode can avoid discard for up to seven days. For experienced bakers who want finer control, the Sidekick offers a Custom mode for tailored feeding schedules and ratios. The unit also uses temperature sensing to adjust feeding cadence to a kitchen’s ambient conditions, and it has user-fillable flour and water hoppers for continued operation. A glass crock is included with the kit for compatibility with common sourdough workflows.

FirstBuild’s collaboration with King Arthur pairs appliance engineering and community-driven product development with baking expertise and recipe credibility. The device launched on Indiegogo in March 2025 and was expected to begin shipping to backers in January 2026. As a crowdfunded product, the Sidekick represents a growing class of appliances aimed at lowering the barrier to entry for home fermentation and sourdough practice.

Practical value for everyday bakers is clear. Starter maintenance is often the highest friction point for people who want to bake regularly but lack time or local climate control. The Sidekick’s scheduled micro-feeds and temperature-aware cadence can reduce the need for frequent refreshes, cut the volume of discard, and deliver a predictable, recipe-ready starter without daily babysitting. For community members juggling work, family, or shared kitchens, that predictability can turn an occasional bake into a weekly habit.

What comes next depends on backer deliveries and real-world kitchen testing. If shipping meets expectations and the feeding algorithms hold up across diverse environments, the Sourdough Sidekick could change how home bakers schedule bakes and manage sourdough waste. For now, bakers watching their starter jars will be weighing the tradeoffs between hands-on fermentation craft and the convenience of automation.