Sourdough Starter Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Sourdough Starter sales on Amazon US totaled 114,300 units in July 2026 (▼ 3.0% vs. the prior month), generating an estimated $1,555,421 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 63.0% of unit volume and 46.3% of revenue, while a typical listing is priced at $18.46. The keyword itself pulled 83,989 Amazon queries over the same period (▲ 20.6% MoM).
Zooming out to the 12-month window ending July 2026, the sourdough starter Top 50 moved 1,412,150 units and $22,755,517 in cumulative sales — an average of 117,679 units and $1,896,293 per month. Monthly throughput topped out at 166,100 units in December 2025 and dipped to 70,750 in August 2025, leaving the latest reading 61.6% higher than August 2025.
Sourdough Starter Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
114.3K
▼ 3.0% MoM
Monthly Revenue 2026/07
$1.6M
▼ 8.0% MoM
Top 10 Market Share 2026/07
63.0%
Sourdough Starter Market Share & Sales Concentration on Amazon US — July 2026
The most-sold sourdough starter listing on Amazon US in July 2026 is ASIN B00P6ERTS6 (Brand: King Arthur), which sold 30,000 units at $7.16 apiece — equal to 26.2% of every unit tracked in this report and 3.3× the volume of the No. 2 listing.
The Top 10 ASINs account for 72,000 units and $720,650 in July 2026 — 63.0% of unit volume and 46.3% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Sourdough Starter' on Amazon
July 2026
Is 63.0% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B00P6ERTS6
King Arthur 100% Organic Bread Flour, Unbleached, 5 lb (Pack of 1) - Non-GMO Project Verified, No Preservatives
30K
▲ 0.0%vs. prior month
$230.1K
latest month
12-month trend
B08HZJJ61J
King Arthur Organic Medium Rye Flour - 3 lbs for Complex Flavorful Breads & Baked Goods - 100% US Grown & Milled - Non-GMO Project Verified - Robust Flavor for Rye Bread, Cookies & More
9K
▲ 12.5%vs. prior month
$68.6K
latest month
12-month trend
B0G2S1B7GR
Beautiful Bread Bags for Homemade Bread - Clear Window Bakery Paper Bags | Keeps Your Sourdough Loaves Fresh for Days - Great for Gifting and Perfectly Sized Packaging for Baked Goods, Set of 50
6K
▲ 100.0%vs. prior month
$70.2K
latest month
12-month trend
B0D3922NVQ
Sourdough Starter Jar Kit, 24 oz Wide Mouth Sour Dough Jars Glass | Sourdough Bread Baking Supplies, Sourdough Tools for Beginners and Pro, Dishwasher-Safe, Borosilicate Glass, 1 Pack
5K
▲ 0.0%vs. prior month
$48K
latest month
12-month trend
B008230RN2
King Arthur Flour, Og, Bread, 5-Pound
5K
▲ 25.0%vs. prior month
$45.3K
latest month
12-month trend
B0D4VDZ92Q
Complete Sourdough Starter Kit, Sourdough Bread Baking Supplies, Banneton Bread Proofing Basket with Sourdough Starter Jar, 9inch Round Bread Proofing Basket, for Bread Baking
5K
▲ 66.7%vs. prior month
$94.7K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Sourdough Starter Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
King Arthur is the best-performing sourdough starter brand in July 2026, moving 44,000 units across 3 ASINs for 61.1% of Top 10 volume. KIBAGA follows with 6,000 units (8.3%), ahead of INOBYO on 5,000 units (6.9%).
With 8 brands splitting the Top 10 and 76.4% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $7.95 to $9.99, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
King Arthur
3 ASINs in Top 10
61.1%
Units
44K
Revenue
$344K
Avg. price
$7.95
B00P6ERTS6
$7.16·★4.7·8K revsKing Arthur 100% Organic Bread Flour, Unbleached, 5 lb (Pack of 1) - Non-GMO Project Verified, No Preservatives
Units sold30KB08HZJJ61J
$8.69·★4.8·8.4K revsKing Arthur Organic Medium Rye Flour - 3 lbs for Complex Flavorful Breads & Baked Goods - 100% US Grown & Milled - Non-GMO Project Verified - Robust Flavor for Rye Bread, Cookies & More
Units sold9KB008230RN2
$7.99·★4.7·2.8K revsKing Arthur Flour, Og, Bread, 5-Pound
Units sold5K
KIBAGA
1 ASIN in Top 10
8.3%
Units
6K
Revenue
$70.2K
Avg. price
$9.99
B0G2S1B7GR
$9.99·★4.7·311 revsBeautiful Bread Bags for Homemade Bread - Clear Window Bakery Paper Bags | Keeps Your Sourdough Loaves Fresh for Days - Great for Gifting and Perfectly Sized Packaging for Baked Goods, Set of 50
Units sold6K
INOBYO
1 ASIN in Top 10
6.9%
Units
5K
Revenue
$48K
Avg. price
$9.99
B0D3922NVQ
$9.99·★4.4·631 revsSourdough Starter Jar Kit, 24 oz Wide Mouth Sour Dough Jars Glass | Sourdough Bread Baking Supplies, Sourdough Tools for Beginners and Pro, Dishwasher-Safe, Borosilicate Glass, 1 Pack
Units sold5K
Trending Sourdough Starter Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, 3 ASINs forced its way in: B0GXBMY62Q booked 3K units at $9.49, with ▲ 200.0% MoM change.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B0GXBMY62Q
My Rustic Roots San Francisco Sourdough Starter, Beginer Friendly, 12g | Organic, non-GMO flour, freeze-dried; activates fast in 2-4 days with clear instructions; authentic San Francisco tang
Price
$9.49
Rating
4.4
Reviews
191
Latest month sales
B0CWH229T1
Skinny Spurtle for Sourdough Starter, Mixing, Reaching Bottom of Jar, Dough Whisk, Natural from High Moist Resistance Teak, Spurtles Kitchen Tools Wooden Kitchen Utensils for NonStick Cookware
Price
$6.99
Rating
4.8
Reviews
1.8K
Latest month sales
B0C78255TZ
KNEADACE Pro Sourdough Bread Starter Kit - 34 oz Large Capacity Sourdough Starter Jar with 5 unique features for the perfect sour dough bread & sourdough starter kit - sourdough supplies (KA06)
Unlock to view ASIN details and product titles
Price
$29.98
Rating
4.6
Reviews
3.6K
Latest month sales
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