Sourdough Mate
Sourdough Starter Warmer Pad – Temperature Control 21–38°C (Australian Plug)
Sourdough Starter Warmer Pad – Temperature Control 21–38°C (Australian Plug)
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The perfect partner to our Sourdough Starter Jars!
Whether your kitchen dips into single digits in winter or you just want a more active, bubbly starter every feed — the Sourdough Starter Warmer Pad takes the guesswork out of fermentation. Dial in the exact temperature your starter loves, set a timer, and walk away knowing it's working.
Never Miss a Feed Again
A cold kitchen is the number one reason home bakers struggle with slow, sluggish starters. Sourdough ferments best between 24°C and 28°C — providing a gentle, controlled warmth to keep your starter active and healthy throughout the cooler months. No need to run the heater all day, rely on oven-light tricks or constantly check on it.
Displayed in Celsius
Set your target anywhere from 21°C to 38°C in small increments, and the digital display shows your live reading in Celsius — not Fahrenheit. Perfect for Australian home bakers following local recipes. Whether you prefer a slower, cooler ferment at 22°C or a fast, active rise at 28°C, you're always in control.
Built Tough — Tempered Glass Surface
The warming surface is made from high-temperature resistant and impact-resistant tempered glass. It handles the daily demands of home baking without warping, cracking or discolouring — and it's easy to wipe clean between feeds.
Set It, Start It, Forget It — Auto Shut-Off
Choose your warming duration, and the pad automatically shuts off when the time is up — or after 12 hours of continuous use, whichever comes first. You'll never come home to a starter that's been running hot all day. Safe, smart, and completely hands-free.
Ready for Australia — Right Out of the Box
Comes with an Australian plug (Type I, 230V) — no adaptors needed. Temperature is displayed in Celsius. Plug straight in and start warming.
Compact Design. Consistent Starter Activity.
If you're looking for a sleek, compact solution specifically for your starter, while still preferring a slower bulk fermentation at room temperature, our Starter Warmer Pad is a great choice. It provides gentle, controlled warmth to help keep your starter active, healthy and ready to bake with throughout the cooler months, while making feeding schedules, fermentation times and baking plans more predictable.
What's Included
- 1 × Sourdough Starter Warmer Pad
- 1 × Australian plug power cord
- 1 × Instruction guide
Great For
- Sourdough starter fermentation & activation (ideal 24-28°C)
- Yoghurt making (ideal 38°C)
- Kombucha SCOBY (ideal 24-27°C)
- Kefir brewing (ideal 21-26°C)
- Any fermentation that needs gentle, consistent warmth
Heating Pad Temperature Explained
The temperature displayed is the target operating temperature, not the surface temperature of the heating pad. The pad itself will typically measure 10–15°C warmer than the set temperature. For example, when set to 24°C, the heating pad surface may measure approximately 34–39°C. This is expected and helps maintain the desired temperature of the item being warmed rather than the pad itself.
The true measure of the warming pad's performance is how your starter responds—not the surface temperature of the pad.
Please note:
Sourdough Mate Starter Jar not included
Sustainable Packaging 🌱
Sustainable Packaging 🌱
We’re committed to reducing our environmental footprint wherever we can. We up-cycle boxes whenever possible, minimise plastic throughout our packaging, and use home-compostable mailing bags where possible.
Small, thoughtful choices help us deliver your order safely while using more sustainable packaging wherever possible.
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 Policy.
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.
World-Wide Shipping
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Use & Care Instructions
Use & Care Instructions
Use & care instructions for all our products.
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- 5 stars: 33 (87%)
- 4 stars: 4 (11%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 1 (3%)
This works so well for getting your starter to rise a little quicker on these cold Aussie nights.
This is great! I was prepared to put my sourdough bread making on hold for winter, it's been SO cold. But this box has solved my problem!
My only tip would be to place a rack on top of the heating pad to stand your containers on. Direct contact caused dried stuck-on edges -maybe I left it in too long, but the rack solved the problem.
It keeps cutting out and it doesn’t keep the temperature
my kitchen was too cold and i was wondering why nothing was proving fast this has really helped and now my stater and dough are proving well great addtion
Electric Heat Fermentation Box
I had a problem with my gluten free sourdough starter. It suddenly became inactive. I would feed it and still nothing.
After trying everything I could think of, I came to the conclusion that it may be the drop in temperature.
I purchased this heat box and couldn't be happier.
It would be good if it plugged straight in rather than having to leave the box slightly unzipped for the heating mat lead. Otherwise, this box has saved my starter!!
Thank you ☺️
great works well i have already sent u a message
Great product ! My sourdough starter is now a repeatable process and this makes a big difference to my sourdough bread. Great results every time !
Best piece of equipment for preparing sourdough you can buy
It was a birthday present for a family member and they love it
I love this new heat pad for my mother starter it’s simply the best especially for winter so am able to bake sourdough 🙏😘🥖🌾💧
Really enjoying having the fermentation box, taking the guess work out of what temperature my dough is proving at.
Amazing heater to keep on baking through winter
My starter was struggling to rise in winter. I nearly gave up trying to keep it at the right temperature. Then my heat box arrived….a few hours in there and my starter had doubled and bubbling. Bulk proofing was quicker in the heat box too. If it wasn’t for this awesome box, I would have given up my sourdough hobby.
The electric fermentation box has been a lifesaver in proofing my sourdough, it has been sow cold in my kitchen this winter
Great little warmer
Perfect warmer pad! I had tried many of the cheap brands on the market and wish I had have gone straight to this! Consistent even temp and my starter is going well even in freezing cold melbourne temperatures!
Excellent product
Perfect for winter!
I also use it to ferment Kefir!
Excellent, works perfect, a very good buy, should have bought it earlier, quite chuffed with it.
Works well, but does seem to run a little too warm. I’ve needed to turn it off for periods of time to regulate.
I just love this compact heating pad. I live in Canberra and struggled to get my starter going on those cold days when I have to go out. Now I can go out for the day knowing that my starter is warm and happy and ready to be used when I come home.
The pad is compact, easy to store and simple to operate.
Awesome! Just beed to get making!
I’m happy with this product and it’s a great price. The mat created a warmer than preferred environment as there’s no temp gauge but that’s to be expected for the cheaper price point.
This proofing box was exactly what I needed to get my starter going as my house is so cold even keeping it in the oven or microwave wasn't enough. The day I put her in this she instantly became active and I was able to bake with her within a week. It has also been great for proofing bread in my cold house.
I have been searching for a reliable AUS warming plate for a reasonable price and couldn't find one. Then I came across this on on IG. It is great! It's so easy to use. I would highly recommend purchasing this warming plate if you are after one.
It’s simple piece of equipment but all that is needed to keep my sourdough at a constant warm temperature and also the dough at the various stages of the sourdough process. It has been a game changer in successfully making sourdough during winter.
This fermentation box has brought a whole new level of predictability when doing bulk fermentaion - no more guessing. I put a rack over the heating pad to keep the bowl off the direct heat and it works a treat. I use the fermentaion box every time.
Honestly a game changer. I tell everyone to get one, really simple little product but makes such a difference when the weather turns colder