Marukyu Koyamaen
Marukyu Koyamaen offers 1 product on RevWix across Food & Nutrition, with an average ethics score of 86/10 and recurring certifications including Organic JAS, Rainforest Alliance.
Standards & certifications
Verified credentials appearing across Marukyu Koyamaen's product range.
Ethics breakdown
Average scores across our scoring pillars.
- Sourcing9/10
- Environment9/10
- Labor8/10
- Transparency7/10
- Animal Welfare7/10
Categories covered
Where Marukyu Koyamaen shows up across our directory.
- Food & Nutrition1
What reviewers highlight
Strengths mentioned most often across Marukyu Koyamaen's products.
- ✓Rich umami flavor
- ✓High-quality taste
- ✓Organic and Rainforest Alliance certified
- ✓Eco-friendly farming practices
Sustainability commitments
"Produced using eco-friendly farming practices, protecting biodiversity and supporting fair labor standards."
Marukyu Koyamaen scores & reviews
Product scorecard
| # | Product | Ethics | Shopper rating | Price |
|---|---|---|---|---|
| 1 | Cha roku - Sencha Premium Grade Green Tea Powder - 100g (3.53 oz) | 86 | 5.0(2) | $215.50 |
Products from Marukyu Koyamaen
Marukyu Koyamaen's Cha roku is a premium, organic and Rainforest Alliance certified sencha green tea powder from Uji, Japan, delivering a rich, umami flavor.
How to read Marukyu Koyamaen's ethics scores
Each Marukyu Koyamaen product on this page carries a 0–100 score built from four checkable inputs: active third-party certifications, disclosed ingredients or materials, published supply-chain information, and the brand's watchdog record. Nothing here is based on Marukyu Koyamaen's own marketing language.
The spread matters as much as the top score. If Marukyu Koyamaen's highest and lowest products sit far apart, verification is being applied to some lines and not others — common when a company certifies a flagship range and leaves the rest undocumented. A narrow spread, even at a moderate average, usually signals a consistent policy.
Scores can move without any editorial change, because certification status is re-checked as pages refresh. A lapsed certificate, a new audit or a recall notice will all show up in the product's certification and notes sections.
Questions worth asking before buying Marukyu Koyamaen
Start with ownership: a parent company's testing or sourcing policy can change what a claim on the packaging actually covers. Then check scope — a certification often applies to one fibre, facility or ingredient rather than the whole product.
Finally, compare within the category rather than against Marukyu Koyamaen's own range. A mid-scoring product can still be the strongest verified option at its price, and a high-scoring one can be beaten by a cheaper certified alternative.
What each score input covers
| Input | What we check | Why it matters |
|---|---|---|
| Certifications | Active listings in public registers, with scope and expiry | Only externally audited claims can be revoked |
| Ingredients & materials | Full disclosure, hazard flags, recycled or organic content | Comparable without trusting brand narrative |
| Transparency | Named suppliers, factories or audit summaries | Shows whether claims survive scrutiny |
| Record | Recalls, regulator rulings and greenwashing findings | Best short-term signal of quality control |
Buying Marukyu Koyamaen with confidence
- Verify the mark, not the adjectiveSearch the certifier's register for the exact product line.
- Check the parent companyOwnership changes what cruelty-free or organic claims cover.
- Compare in-categoryThe same score means different things across categories.
- Read open notes firstAn unresolved recall outweighs a few score points.
Frequently asked
Is Marukyu Koyamaen an ethical brand?+
Marukyu Koyamaen's standing here is the average of its scored products, built only from verifiable inputs: active certifications, disclosed ingredients or materials, published supply-chain data and its recall or regulator record. Where a claim cannot be checked in a public register, it earns nothing.
Is Marukyu Koyamaen certified by third parties?+
Any certification we could confirm appears on the individual product cards above. Marks shown are matched to the certifier's own register; self-declared logos and internal awards are not counted.
Why do Marukyu Koyamaen products have different scores?+
Scores are per product, not per brand. Differences usually come from certification scope, ingredient or material disclosure, and packaging — a certified flagship can sit far above an undocumented line from the same company.
Are there better alternatives to Marukyu Koyamaen?+
Compare within the category rather than the brand: category rankings list the highest-scoring verified options at each price level, so you can see whether a cheaper certified alternative beats the Marukyu Koyamaen product you were considering.