Four Sigmatic Organic Cold Brew Coffee Grounds
- Cold-Brew Coffee & Concentrate
- More reviewed than 96%
A coarse-ground, Lion's Mane and Yacon-infused coffee built specifically for cold brewing, not a general drip coffee.
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How it ranks among the 23 cold-brew coffee & concentrate we track
4.4★ across 21,300 Amazon ratings, Bayesian-smoothed toward the category average.
21,300 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
2,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 23 cold-brew coffee & concentrate we track - how the scorecard works · full cold-brew coffee & concentrate data report. Confidence: limited - incomplete product information.Updated 7 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 12-ounce bag of Four Sigmatic Organic Cold Brew Coffee Grounds, a coarse-ground dark roast blended with Lion's Mane mushroom and organic Yacon root powder, made specifically for cold brewing.
Unlike the brand's regular ground coffee, this one is cut coarse and formulated for cold brew rather than a drip machine. The Yacon root addition is aimed at digestion alongside the Lion's Mane focus angle, so this is a cold-brew-specific, ingredient-added coffee rather than a general-purpose bag.
- 12 oz coarse dark roast grounds
- Formulated for cold brew, 2 tbsp per 8 fl oz water
- 250 mg Lion's Mane plus organic Yacon root per serving
- Sourced from a Honduran family co-op
Who it's for
Suits cold brew drinkers who also want Lion's Mane and a prebiotic Yacon root addition in their coffee. Not the right pick for anyone brewing hot drip coffee or wanting a fine grind.
Strengths and trade-offs
Drawn from this product's published specifications.
- Coarse grind made specifically for cold brew
- 250 mg organic Lion's Mane per serving
- Yacon root prebiotic added for digestion
- Coarse grind is not suited to hot drip brewing
- Mushroom and Yacon additives change the flavor from plain coffee
Performance notes
The brand recommends 2 tablespoons of the coarse grounds per 8 fl. oz. of water for cold brewing. Each serving carries 250 mg of organic Lion's Mane, paired with Yacon root as a prebiotic addition, using beans sourced from a family-run co-op in southwest Honduras at roughly 5,500 feet elevation.
Specifications
| Brand | Four |
|---|
How it compares
This product against the closest alternatives we track in cold-brew coffee & concentrate.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Four Sigmatic Organic Cold Brew Coffee GroundsThis product | 4.4 / 5 | 21,300 | 2.7 / 5 |
| Starbucks Medium Roast Iced CoffeeStarbucks | 4.8 / 5 | 6,200 | 4.8 / 5 |
| SToK Bold & Smooth Unsweetened Cold Brew CoffeeStok | 4.8 / 5 | 5,000 | 4.8 / 5 |
| Nescafe Frappe Instant CoffeeNescafe | 4.5 / 5 | 11,900 | 4.7 / 5 |
| Chameleon Cold Brew, Coffee Cold Brew Espresso Concentrate Organic, 32 Fl OzChameleon | 4.7 / 5 | 1,200 | 4.6 / 5 |
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Questions about the Four cold-brew coffee & concentrate
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is this grind suited to a drip machine?
No, it is coarse ground specifically for cold brewing rather than hot drip brewing.
What is the recommended cold brew ratio?
The brand recommends 2 tablespoons of grounds per 8 fl. oz. of water.
What is added besides Lion's Mane?
Organic Yacon root powder, included as a prebiotic ingredient.