

🍞 Elevate your baking game with 100+ years of sourdough mastery—don’t just bake, create a legacy!
This Mature Sourdough Starter Culture is a dehydrated, 100+ year-old natural sourdough starter kit designed for fast reactivation and easy use. Made from non-GMO, preservative-free ingredients, it delivers authentic, tangy artisan bread flavor and probiotic health benefits. Ideal for both beginners and expert bakers, it supports versatile baking applications with expert guidance to ensure consistent, delicious results.


















| ASIN | B0DW1F21WK |
| ASIN | B0DW1F21WK |
| Best Sellers Rank | #1,281 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #1 in Sourdough Starters |
| Brand Name | Captain Sourpants |
| Container Type | Bag |
| Cuisine | Bread |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,196) |
| Diet Type | Vegan, Vegetarian |
| Flavor | Mature |
| Item Form | Powder |
| Item Package Weight | 0.02 Kilograms |
| Manufacturer | Captain Sourpants Inc |
| Manufacturer | Captain Sourpants Inc |
| Number of Items | 1 |
| Package Dimensions | 6.22 x 4.21 x 0.39 inches; 0.63 ounces |
| Recommended Uses For Product | Baking |
| Region of Origin | Canada |
| Size | 0.53 oz |
| Specialty | Additive Free, GMO Free, Vegan |
| UPC | 197644881710 |
| UPC | 197644881710 |
M**N
Very impressed with starter!
Absolutely love! Shipping was fast but also the starter is amazing itself! I tried doing a homemade starter but grew impatient. The directions are so easy and basically fool proof. I’m on day 5 and since day 3 it has been rising and falling how it should be, doubling if not more! Tonight I’m trying to make bread for the first time and we’ll see how it goes! Smell is perfect, sour but fresh and so bubbly and active ! I know I may be jumping the gun trying out the bread this early, but based on all my research it’s promising hence the activity and rising time in the starter!
P**R
Reliable and consistent
I rehydrated this Gluten-Free Sourdough Starter and was pleasantly surprised by how reliably it came back to life. I’m in Southern California, and it took about 3 days of consistent feeding to become clearly active, which felt very reasonable for a gluten-free starter. Once established, it showed good fermentation: visible rise, lots of fine bubbles, and that pleasantly tangy, yogurt-like aroma you want in a healthy starter. As expected with gluten-free starters, it doesn’t behave exactly like a wheat starter (it collapses more quickly and doesn’t hold structure in the same way), but it’s clearly strong and active when fed appropriately. Overall, this is a perfect option if you want a dependable gluten-free sourdough starter without having to build one from scratch. With patience and proper feeding ratios, it becomes a very usable and consistent starter for gluten-free sourdough baking.
H**Y
Fantastic Stater
This starter is exactly as advertised. I needed to use three different starters though, and let me tell you why so you don’t make the same mistakes I made. The first batch of starter barely grew and developed a slight acetone smell after a week of trying. I contacted the seller and they were amazing. They explained that my problem was probably environmental and they were right. It had been on my kitchen counter and the temperature fluctuated too much, so they asked me to try again, and I did. The second batch was done in the oven with the oven light on. This was the perfect temperature and after four days it was ready to use, but my housemate accidentally turned on the oven destroying my batch. So the next idea was to cover the stove controls with post it notes, The third batch was amazing! The post it notes helped in a household where multi people use appliances and prevents any oopsies. On the fourth day, I made focaccia because my dough was too soft, had it sit in the refrigerator for three days and allowed it to proof before I baked it. It had a wonderful flavor and texture, I used an inverted cookie sheet with a pan of water on top to seal in the steam, and it stuck to the bottom, so next time I will use a sheet of parchment paper Then I made an actual round loaf in my very inexpensive dutch oven. I used a small kitchen bowl lined with flour and cheesecloth, covered it to make the right size loaf, nothing fancy, nothing expensive, and let it cure in the refrigerator for three days, I put parchment paper in a warm Dutch oven and baked it to a golden brown. It made great grilled cheese sandwiches. Nice flavor, mildly tangy. Now my third batch is jumbo cupcake size sour dough rounds for Christmas dinner. Those are prepared in a 9*13 pan with giant cupcake papers. It will also cure for three days, proof and then bake it to a golden brown brown. The starter that I have stored in my fridge activates almost immediately and is ready to use the same day I feed it. Fantastic starter
L**G
Perfect for beginners
I am/was a sourdough beginner. This starter helped me get a strong start to learning how to make bread. The instructions were so simple and easy to follow. The bread was delicious. It took be about 7 days to build the strong starter before baking. I recommend this for beginners as a helpful shortcut.
S**A
Good starter!
I’ve purchased this starter twice and it works well and tastes great! It does take longer to bulk ferment compared to traditional sourdough starter and does great with cooler temperatures so know that and plan for it before you bake. For example, I am using it for a recipe to make cinnamon rolls. The recipe calls for bulk fermentation in a proofer for 6 hours. It’s taken about 9.5. The starter rehydrated well, makes great bread, and was ready to bake with in less than a week. I love the little hint of tartness! I absolutely would purchase this again if I needed to.
S**M
Excellent sour dough starter!
Purchasing this sour dough starter was well worth it! The instructions are clear and easy to follow for a beginner. It was packaged nicely. I followed the directions exactly as they detailed and I now have a sour dough starter that I have been using for months to make the most delicious bread! I have even shared my starter with others and got them started on their sour dough journey!
A**E
Great starter, might not be appropriate for whole wheat flour
The sourdough starter is good and consistently bubbled up the first 5-6 days with regular feeding. Although I was using all purpose flower for the feeding, I used whole wheat flour for making the main dough and that did not bake as expected. Maybe it doesn't work well with whole wheat bread during bulk fermentation. Otherwise very good starter.
D**E
Amazing starter + rye flour tip!
This sourdough starter is fantastic and very active. I wanted to share a tip that made a huge difference for me: instead of feeding it with all purpose flour, I switched to rye flour. My starter became noticeably healthier, stronger, and much happier almost immediately. Since making that change, I’ve baked the most beautiful sourdough bread great rise, amazing flavor, and a gorgeous crumb. If you’re having any trouble or just want to level up your starter, I highly recommend trying rye flour. This starter + rye flour combo has been a total win for me!
N**A
This sourdough starter did not disappoint. It was doubling and bubbling within 36 hours and ready for baking on day 3! I have to give a shoutout to the customer service agent who was quick to answer my questions and assure me that I was doing all the right things. I would definitely recommend this starter to anyone who wants to try baking sourdough bread.
P**!
Perfect!
A**R
First-time sourdough guy here. I wasn’t expecting to write a glowing review of dried microbes... and yet, here we are. This starter worked brilliantly. All it needed was a jar, an appropriate cover, and some flour and water. It revived quickly, smelled alive and tangy by Day 2, and led to a proper, honest-to-goodness sourdough loaf I was proud to slice into. But what really impressed me was the customer support. On Day 1, I sent a quick message to the seller with a photo and a “Not sure I’m doing this right?” question. Fifteen minutes later, I received a kind, detailed reply from someone named Heli, who clearly knew their stuff and genuinely wanted to help. Different flours and absorption rates are a thing, apparently. Their guidance helped get my starter on track, and the follow-up made it clear this wasn't a one-off. That kind of support gave me real confidence going into my first bake. What I liked: - Fast, consistent fermentation once it got going - Clear and usable instructions - Thoughtful, responsive customer service (not a bot!) - Clean, organic ingredients (brown rice flour, AP flour, wild yeast) - Arrived well packaged What to know: - It’s not the cheapest starter out there, but the quality and support easily justify the price - Like all sourdough, it still needs a bit of love—don’t expect set-it-and-forget-it results (but if you’re here, you probably already know that) Bottom line: If you’re new to sourdough and want to skip the mess of building a starter from scratch, this is a reliable, beginner-friendly option that still feels authentic. My dough rose beautifully and baked like a dream. For seasoned bakers, this could be a great backup or a way to try a different regional flavour. Either way, I highly recommend it. Solid 5 stars.
J**N
I have been trying to make my own but am unable. Lol. I ordered this and started it today. Tomorrow I will know more. But instructions are very clear, easy to understand. Packing is beautiful. Well update on starter. Absolutely perfect, it's working great and looking forward to baking with it soon!!
B**Y
The Capt Sourpants starter worked perfectly the first time (I had previously tried to make my own starter from scratch several times and failed). The instructions were clear and the tips are great. My first attempt at making the sourdough bread from the recipe on their website worked great as well. This product is highly recommended.
Trustpilot
2 weeks ago
2 weeks ago