Marukyu-Koyamaen vs Offshore Tea Matcha: 2026 Comparison
Marukyu-Koyamaen sources from Uji, Japan while Offshore Tea sources from Japan, giving each brand a distinct terroir and flavor profile. On price, Offshore Tea is $0.23/g less expensive per gram ($1.13/g vs $0.90/g).
Verdict by Axis
No single overall winner is declared. The better choice depends on which axis matters most to you.
Price per gram
Offshore Tea
Offshore Tea is $0.23/g cheaper ($1.13/g vs $0.90/g).
Testing transparency
Marukyu-Koyamaen
Marukyu-Koyamaen is Tier 4 vs Unrated for Offshore Tea. Lower tier number means more disclosure.
Published lead level
Tie / indeterminate
Neither brand has published a numeric lead value. Cannot compare.
Origin
Tie / indeterminate
One or both brands have not publicly disclosed their leaf origin region.
Organic certification
Tie / indeterminate
Neither brand has a publicly confirmed organic certification.
Side-by-Side Spec Table
| Field | Marukyu-Koyamaen | Offshore Tea |
|---|---|---|
| Origin | Uji, Japan | Japan |
| Grade | Ceremonial | Latte |
| Price per gram | $1.13/g | $0.90/gBetter |
| Transparency tier | Tier 4 | -- |
| Publishes numeric COA | No | No |
| Third-party tested | No | No |
| Organic certification | None | None |
| Lead (published) | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
| Cadmium (published) | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
| Arsenic (published) | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
| Mercury (published) | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
| Pesticide tested | No | No |
| Last verified | June 24, 2026 | June 27, 2026 |
Origin
Grade
Price per gram
Transparency tier
Publishes numeric COA
Third-party tested
Organic certification
Lead (published)
Cadmium (published)
Arsenic (published)
Mercury (published)
Pesticide tested
Last verified
Heavy Metals and Safety Disclosure
Neither Marukyu-Koyamaen nor Offshore Tea has published numeric heavy metal values as of the last verification dates (June 24, 2026 and June 27, 2026 respectively). Without published ppb values, independent verification is not possible.
| Metal | Marukyu-Koyamaen | Offshore Tea |
|---|---|---|
| Lead | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
| Cadmium | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
| Arsenic | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
| Mercury | Not publicly published (checked June 24, 2026) | Not publicly published (checked June 27, 2026) |
Source: brand-published COAs and independent test results. Values are from specific batches and dates. Absence of published data does not indicate safety or danger. Last verified: Marukyu-Koyamaen June 24, 2026, Offshore Tea June 27, 2026.
Price Comparison
Offshore Tea is $0.23/g cheaper than Marukyu-Koyamaen ($0.90/g vs $1.13/g, a 20% difference). At 30 servings per month, that is approximately $14/month in savings.
Detailed Analysis
Testing Transparency
No public testing statement has been found for Marukyu-Koyamaen as of the last verification date. No public testing statement has been found for Offshore Tea as of the last verification date.
Origin and Sourcing
Marukyu-Koyamaen sources from Uji, Japan and Offshore Tea sources from Japan. Different growing regions produce distinct flavor profiles: Uji matcha tends toward sweet umami, Kagoshima toward fresh and grassy, and Yame toward rich and complex. Neither region is objectively superior.
Which Should You Buy?
If testing transparency is your priority: Marukyu-Koyamaen (Tier 4) discloses more than Offshore Tea (Unrated). If price per gram is your priority: Offshore Tea is the more affordable option at $0.90/g.
Frequently Asked Questions
Is Marukyu-Koyamaen or Offshore Tea cheaper?
Offshore Tea is cheaper at $0.90/g vs $1.13/g per gram, a difference of $0.23/g. Prices verified as of 2026-06-27.
Does Marukyu-Koyamaen publish lab results?
No public testing statement or COA has been found for Marukyu-Koyamaen as of June 24, 2026.
Does Offshore Tea publish lab results?
No public testing statement or COA has been found for Offshore Tea as of June 27, 2026.
Is Marukyu-Koyamaen or Offshore Tea organic?
Offshore Tea holds None certification. Marukyu-Koyamaen does not have a publicly confirmed organic certification as of the last verification date.
Related comparisons
All data in this comparison is sourced from publicly available COAs, brand websites, and independent test results. Every safety data point carries its source and last-verified date. Steady Matcha does not conduct or claim ownership of third-party test results for other brands. Brand information changes: verify current status before purchasing.