Kmise 2 Pack Pro Sourdough Starter Jar, 34 Oz Large Capacity DIY Glass Kit With Thermometer, Date Marked Feeding Band, Cloth Cover, Spatula and Cutter Review (2026)

Two Complete Starter Setups

Kmise packages this as two 34 oz jars, each with its own scraper, cloth cover, feeding band and thermometer sticker, plus a shared dough cutter. That structure makes sense for a baker who wants to run two different starters side by side, perhaps a rye and a white flour culture, or who wants a spare jar ready in case one starter needs to be discarded and restarted from scratch. It also suits someone who bakes often enough that having a second jar on standby, already clean and ready to feed, saves a cleaning step on a busy baking day. A single baker with one starter may find the second jar goes unused, in which case the value comes down to whether the price beats buying two single jar kits separately.

Jar Material and Seal

Both jars are made from borosilicate glass, which the seller describes as heat and cold resistant, a reasonable spec for a jar that moves between room temperature counter feeding and occasional refrigerator storage. The lids use a silicone seal designed to keep the jar airtight when closed, which is useful for storing a starter in the fridge between bakes without it drying out or picking up other refrigerator smells. For daily feeding, most bakers loosen or remove the lid to let the starter breathe and expand, switching to the cloth cover instead, so the airtight lid mainly earns its keep during storage rather than active fermentation.

Included Tools per Jar

Each jar comes with its own silicone spatula, described as having a thin, soft edge for scraping starter off the jar wall during feeding, along with a stainless dough cutter shared between the pair. The scraper detail matters more than it sounds, since a stiff or thick spatula tends to leave starter residue stuck in the corners of a jar, which then dries and can affect how cleanly you can judge the starter's rise on the next feeding. The color changing thermometer sticker works without batteries and is meant to be applied to the jar exterior for a quick temperature read, which is a lower maintenance approach than a separate probe thermometer, though it will be less precise than a digital reading.

Fit for Frequent or Backup Bakers

The main case for choosing a two jar kit over a single jar is convenience for anyone maintaining more than one starter or who wants insurance against a starter going bad. Sourdough starters can occasionally develop mold or an off smell that requires discarding the whole jar and starting over, and having a second clean jar and matching accessories on hand removes a scramble to find replacement supplies at that moment. For a baker who only ever plans to keep one starter, a single jar kit is simpler and avoids the extra counter or fridge space two jars require, so this kit is really aimed at the more committed or experimental sourdough baker rather than someone baking their very first loaf.

Cleaning and Practical Notes

Borosilicate glass jars with a wide mouth opening are generally straightforward to hand wash, and the included cloth covers will need occasional washing of their own since they sit directly against the jar opening during active fermentation and can pick up flour residue. The cutter's exact intended use is not detailed in the product listing, so treat it as a general purpose dough tool for portioning rather than a jar specific accessory. With two jars, two scrapers, two cloth covers and two feeding bands, this kit effectively doubles the setup of a single jar kit, which is the main trade off buyers should weigh against the added counter or shelf space needed to store both.

Frequently asked questions