Greenteahouse vs Kettl Matcha: 2026 Comparison
Greenteahouse sources from Japan while Kettl sources from Uji, Yame, Shizuoka, Shiga, Japan, giving each brand a distinct terroir and flavor profile.
Verdict by Axis
No single overall winner is declared. The better choice depends on which axis matters most to you.
Price per gram
Tie / indeterminate
Only Kettl has a published price ($2.75/g). Cannot compare.
Testing transparency
Kettl
Kettl is Tier 4 vs Unrated for Greenteahouse. 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
Greenteahouse
Greenteahouse holds ORGANIC certification. Kettl does not have a publicly confirmed organic certification.
Side-by-Side Spec Table
| Field | Greenteahouse | Kettl |
|---|---|---|
| Origin | Japan | Uji, Yame, Shizuoka, Shiga, Japan |
| Grade | Latte | Ceremonial |
| Price per gram | Not available | $2.75/g |
| Transparency tier | -- | Tier 4 |
| Publishes numeric COA | No | No |
| Third-party tested | No | No |
| Organic certification | ORGANIC | Unspecified |
| Lead (published) | Not publicly published (checked date unknown) | Not publicly published (checked June 27, 2026) |
| Cadmium (published) | Not publicly published (checked date unknown) | Not publicly published (checked June 27, 2026) |
| Arsenic (published) | Not publicly published (checked date unknown) | Not publicly published (checked June 27, 2026) |
| Mercury (published) | Not publicly published (checked date unknown) | Not publicly published (checked June 27, 2026) |
| Pesticide tested | No | No |
| Last verified | date unknown | 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 Greenteahouse nor Kettl has published numeric heavy metal values as of the last verification dates (date unknown and June 27, 2026 respectively). Without published ppb values, independent verification is not possible.
| Metal | Greenteahouse | Kettl |
|---|---|---|
| Lead | Not publicly published (checked date unknown) | Not publicly published (checked June 27, 2026) |
| Cadmium | Not publicly published (checked date unknown) | Not publicly published (checked June 27, 2026) |
| Arsenic | Not publicly published (checked date unknown) | Not publicly published (checked June 27, 2026) |
| Mercury | Not publicly published (checked date unknown) | 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: Greenteahouse date unknown, Kettl June 27, 2026.
Price Comparison
Greenteahouse does not have a published price per gram. Kettl is priced at $2.75/g (as of 2026-06-27).
Detailed Analysis
Testing Transparency
No public testing statement has been found for Greenteahouse as of the last verification date. No public testing statement has been found for Kettl as of the last verification date.
Origin and Sourcing
Greenteahouse sources from Japan and Kettl sources from Uji, Yame, Shizuoka, Shiga, 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: Kettl (Tier 4) discloses more than Greenteahouse (Unrated). If organic certification matters to you: Greenteahouse holds ORGANIC certification. Kettl does not have a publicly confirmed organic certification.
Frequently Asked Questions
What is the price of Greenteahouse vs Kettl?
Kettl is priced at $2.75/g. Greenteahouse does not have a published price per gram available.
Does Greenteahouse publish lab results?
No public testing statement or COA has been found for Greenteahouse as of date unknown.
Does Kettl publish lab results?
No public testing statement or COA has been found for Kettl as of June 27, 2026.
Is Greenteahouse or Kettl organic?
Greenteahouse holds ORGANIC certification. Kettl 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.