Glass Sourdough Starter Jar Kit – 300, 500 & 900 mL Options

Watch Your Sourdough Starter Grow

Keep your sourdough starter in view with a clear glass jar featuring measurement markings and a stainless steel lid. Follow its rise between feedings and choose the capacity and accessory combination that suits your bread-making routine. From your first starter to your next homemade loaf, this jar gives your project a dedicated place to grow.

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Key Product Benefits

Clear glass lets you see your starter and monitor its rise.
Measurement markings help you track changes in volume.
High borosilicate glass jar with a stainless steel lid.
Three capacities let you choose a smaller or larger container.
Select kits with a silicone spatula, thermometer strip, or date ring as detailed below.

Choose Your Kit

Every option includes a glass jar and stainless steel lid. Accessories depend on your selection:

A 900 mL: jar and lid.
B 300 mL: jar, lid, and silicone spatula.
B 500 mL: jar, lid, and silicone spatula.
B 900 mL: jar, lid, and silicone spatula.
E 300 mL: jar, lid, and thermometer strip.
E 900 mL: jar, lid, thermometer strip, and date ring.
F 300 mL: jar, lid, thermometer strip, and silicone spatula.

Who Is It For?

This kit is for home bakers starting a sourdough culture or maintaining an existing starter. It also suits anyone who wants to see the starter's progress through clear glass and choose practical accessories for their feeding routine.

Product Details

Jar material: high borosilicate glass
Lid material: stainless steel
300 mL capacity: approximately 10.14 US fl oz
500 mL capacity: approximately 16.91 US fl oz
900 mL capacity: approximately 30.43 US fl oz
Clear jar with measurement markings
Accessory contents vary by kit

Select your kit and capacity before adding it to your cart.

Use and Thermometer Strip Care

Leave room for your starter to expand and avoid sealing the jar airtight during active fermentation. The supplied guidance recommends keeping flour below half the jar's capacity.

For kits with a thermometer strip, choose its position before attaching it; removing the strip can damage it. Avoid soaking the strip, dry it immediately after a quick rinse, and keep it out of direct sunlight and environments above 50°C (122°F). Green indicates the current temperature, blue a lower temperature, and brown a higher temperature. The stated accuracy is ±2°C (±3.6°F).

Why Buy from My Crafty Corner?

Find starter jars and sourdough supplies together at My Crafty Corner. Clear capacity and kit-content comparisons help you choose your container and accessories, then explore more supplies for your next bread-making project in one place.

Frequently Asked Questions

Does every kit include a spatula?

No. All B kits and the F 300 mL kit include a silicone spatula. The A and E kits do not include a spatula.

Which kits include a thermometer strip?

The E 300 mL, E 900 mL, and F 300 mL kits include a thermometer strip.

Which option includes a date ring?

The E 900 mL kit includes a date ring along with the jar, lid, and thermometer strip.

What capacities are available?

Choose 300 mL (approximately 10.14 US fl oz), 500 mL (approximately 16.91 US fl oz), or 900 mL (approximately 30.43 US fl oz). Not every kit style is available in every capacity.