High confidence
Exact registry match — this is a specific TTB COLA record. We found a strong match for this wine.
What to Expect
Keenan offers a blend of Cabernet Sauvignon and Merlot, likely showcasing the full-bodied character of Cabernet Sauvignon with its firm tannins and dark fruit flavors, complemented by the softer texture and moderate acidity of Merlot. While the exact origin is unknown, you can expect these grapes to be sourced from renowned vineyards in California or other regions known for producing high-quality blends.
Original editorial summary © 2026 Encyclopedia of Wine. All rights reserved; may not be reproduced without permission. Registry facts are public TTB data; brand names and label artwork remain the property of their respective producers.
| TTB ID | 22210001000381 |
|---|---|
| Brand name | KEENAN |
| Fanciful name | CAPSTONE |
| Class / type | — |
| Origin / appellation | — |
| Grape varietals | Cabernet Sauvignon, Merlot |
| Approval date | Aug 1, 2022 |
| Status | APPROVED |
| Serial number | 22010K |
| Permit number | BW-CA-4747 |
| Producer name & address | ROBERT KEENAN WINERY, R.H. KEENAN COMPANY 3660 SPRINGS MOUNTAIN RD SAINT HELENA CA 94574 ROBERT KEENAN WINERY (Used on label) |
| TTB record | View on TTB COLA Online → |
Official Source
TTB remains the source of record. Wine Grabber links each record back to the public COLA detail when available.
View official TTB record → Related Registry Pages
What would you like to do next?
Wine Grabber is a free public registry. Pick the path that fits you — your choice helps us learn what people come here for.
For wine drinkers
Understand & remember this wine
Scan, understand, save, and learn about this wine.
For wine businesses
Manage & monetize this wine data
Turn labels into clean product records, menus, shelf cards, ecommerce copy, and inventory-ready wine data.
Data sourced from the public TTB COLA Online registry. Wine Grabber is not affiliated with or endorsed by TTB.
Label images are being added for a growing share of records as we harvest them from TTB. Coverage is partial and growing. Coverage & Limitations →