Sourdough Mate
Sourdough Starter Jar — 800ml Borosilicate Glass with Acacia Wood Lid
Sourdough Starter Jar — 800ml Borosilicate Glass with Acacia Wood Lid
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A beautiful, practical home for your sourdough starter
We designed this jar with a simple goal: to create something that works exactly as intended, while being beautiful enough to belong in the kitchens of the bakers who use it.
We’ve left out unnecessary markings, oversized logos and features that can overcomplicate the process. Instead, the clean, simple design lets you observe your starter naturally and learn how it behaves over time.
Because sourdough is as much about observation and intuition as it is about measurements.
Designed specifically for sourdough starters
A good sourdough starter jar should make feeding, stirring and monitoring your starter easier — not harder.
The curved base allows your starter to mix smoothly without getting trapped in awkward corners. The straight glass walls make it easy to see how much your starter has risen and make cleaning much simpler.
Use a rubber band around the jar to mark your starter's starting level and quickly see how much it has grown.
No complicated markings. No unnecessary features. Just a beautiful, functional jar designed around how sourdough starters are actually used.
A beautiful jar for your kitchen
We wanted to create a sourdough starter jar that looked as good as it worked.
The clean, minimal design sits naturally on your kitchen bench rather than looking like another piece of baking equipment that needs to be hidden away.
The solid acacia wood lid gives each jar its own character, with natural variations in grain, colour and texture making every piece unique.
Designed in Melbourne.
More than just a sourdough starter jar
When you're not baking, your jar doesn't have to sit empty.
The airtight silicone-sealed lid and stackable design make it useful as a pantry storage jar for ingredients such as:
- Flour
- Grains
- Seeds
- Nuts
- Coffee
- Snacks
One beautiful jar, two everyday uses.
Why you'll love it
- 800ml capacity — generous space for feeding and starter growth
- Heat-resistant borosilicate glass — durable and designed for everyday use
- Curved base — helps make stirring smooth and reduces flour collecting in the corners
- Solid acacia wood lid — natural, beautiful and individually unique
- Silicone seal — creates an airtight seal when your starter is stored
- Thread-free glass walls — easier to stir, scrape and clean
- Stackable design — keeps your kitchen bench or pantry organised
- Dishwasher-safe glass — easy everyday care
Looking after your starter
A healthy starter needs regular feeding and the right temperature.
For reliable fermentation, keep your starter around 24–28°C.
If your kitchen is cold, our Sourdough Starter Warming Pad or Electric Fermenting Heat Box can help maintain a more consistent temperature.
Features & dimensions
Features & dimensions
Key features
- Heat-resistant borosilicate glass — up to 120°C
- Solid acacia wood lid
- Silicone sealing ring
- Curved base for easier stirring
- Straight, thread-free sides
- Stackable design
- Dishwasher-safe glass
- Individually boxed
Dimensions
Capacity: 800ml
Diameter: 110mm
Height: 140mm
Use & care
Use & care
How to use your Sourdough Starter Jar
When feeding your starter
Remove the silicone seal from the lid while your starter is fermenting. This allows gases produced during fermentation to escape.
Use a rubber band to mark the starting level of your starter so you can easily monitor its rise.
When storing your starter
If you're storing your starter in the refrigerator, replace the silicone seal to create an airtight barrier.
This helps protect your starter from:
- Drying out
- Absorbing refrigerator odours
- Unwanted contamination
Care instructions
Glass: Dishwasher safe.
Acacia wood lid & silicone ring: Hand wash only.
To keep your jar looking its best:
- Use silicone utensils when stirring
- Avoid excessive force when mixing
- Avoid abrasive cleaning products
- Avoid sudden temperature changes
- Hand wash and dry the wooden lid
- Apply a food-grade oil to the wood occasionally as needed
Regularly conditioning the acacia wood helps prevent it from drying out and keeps it looking beautiful for years to come.
Frequently asked questions
Frequently asked questions
Is this jar suitable for sourdough starter?
Yes. The 800ml capacity gives your starter plenty of room to grow between feeds, while the curved base makes stirring and mixing easier.
Can I put my sourdough starter in the fridge?
Yes. When storing your starter in the refrigerator, use the silicone seal to create an airtight barrier and help prevent the starter from drying out or absorbing odours.
Should I leave the lid sealed while my starter is fermenting?
No. When feeding or activating your starter, remove the silicone seal so gases produced during fermentation can escape.
Is the glass dishwasher safe?
Yes. The glass jar is dishwasher safe. The acacia wood lid and silicone ring should be washed by hand.
Can I use the jar for things other than sourdough?
Absolutely. When your starter is resting or you're taking a break from baking, use it as an airtight pantry canister for flour, grains, seeds, coffee, snacks and other dry ingredients.
Can I use metal utensils with the jar?
We recommend using silicone utensils to help protect the glass and avoid unnecessary force when mixing.
Is the wooden lid exactly the same on every jar?
No. Each lid is made from natural solid acacia wood, so the grain, colour and texture will vary. These natural variations are part of what makes each jar unique.
Same or Next Day Dispatch
Same or Next Day Dispatch
Most orders are processed as quickly as possible, with tracking details emailed to you on the same or next business day.
We exclusively use Australia Post for all deliveries, as they offer the most reliable service. Shipping rates are calculated and displayed at checkout.
You can find more details on our Shipping Information page.
Click & Collect (unavailable)
We’re an online store, and while all our items are carefully packed and shipped from our Mount Martha warehouse, we’re not set up for in-store pick-up at this time. We apologise for any inconvenience and appreciate your understanding.
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