Sterling Vineyards Napa Valley Cabernet Sauvignon 2021
Scanned July 2026 · beverages · high confidence
- Sterling Vineyards Napa Valley Cabernet Sauvignon 2021 scores 67 out of 100 — grade B+ on the GreenSpecs five-signal analysis, scanned July 2026.
- Certifications found on the label: Certified California Sustainable Vineyard & Winery.
- Signal breakdown (each of 20): claims 15, certifications 12, packaging 8, ingredients 16, supply chain 16.
The real story
This wine comes from a Certified California Sustainable Vineyard and Winery, meaning audited practices for water, energy, and biodiversity are in place. The glass bottle is standard for wine, though lighter options exist.
A certified sustainable California wine. Good for the land.
How do the five signals break down?
| Claims and disclosure | 15 / 20 |
| Certifications | 12 / 20 |
| Packaging lifecycle | 8 / 20 |
| Ingredient impact | 16 / 20 |
| Supply chain | 16 / 20 |
Each signal is worth 20 points — the method is public at how we score.
What is on the label?
Primary claim: "Certified California Sustainable Vineyard & Winery"
What the claims cover
- Certified California Sustainable Vineyard & Winery
What is still missing
- Standard glass bottle is heavy.
Worth knowing
- This is a great find because the 'Certified California Sustainable' label means the vineyard and winery are actually audited for their practices, not just making claims!
Where the footprint lives
Scope 3 — the supply chain: The certification addresses upstream vineyard practices and winery operations, which is where most of the footprint lies for wine.
Most of a product's emissions sit upstream in Scope 3 — the scope breakdown explains why that decides the score.
Smart swaps and tips
- Look for 'Certified California Sustainable' on other California wines.
- Consider boxed wine for a much lower packaging footprint.
People and health
Social: The Certified California Sustainable standard includes social equity criteria for vineyard and winery workers.
Health: Ingredient list not visible in this scan.
Numbers from a scan of the real label, July 2026. Holding this product — or its shelf neighbor? Scan it and compare the five signals side by side. New to the method? Start with the rules of thumb.