High confidence
Exact registry match — this is a specific TTB COLA record. We found a strong match for this wine.
What to Expect
This RIDGEBACK dessert wine is crafted with a unique blend of Cabernet Franc 45%, Merlot 33%, Cabernet Sauvignon 11%, and Petit Verdot 11%. Enjoy its rich, aromatic profile from South Africa (Union of), perfect for pairing with desserts or as a versatile cooking ingredient. With notes reminiscent of the classic Bordeaux blends, this wine offers a delightful balance of soft tannins and moderate acidity that make it both approachable and sophisticated.
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 | 20272001000689 |
|---|---|
| Brand name | RIDGEBACK |
| Fanciful name | SIGNATURE C |
| Class / type | — |
| Origin / appellation | — |
| Grape varietals | Cabernet Franc 45%, Merlot 33%, Cabernet Sauvignon 11%, Petit Verdot 11% |
| Approval date | Oct 1, 2020 |
| Status | APPROVED |
| Serial number | 20RB15 |
| Permit number | CA-I-22576 |
| Producer name & address | Petra's Cellar LLC 1419 ASHWOOD DR Martinez CA 94553 |
| 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 →