Updated July 2026.
Kirkland Signature Brut Champagne is real Champagne AOC from Verzenay, not a California sparkling stand-in. Back-label and Costco Wine Blog copy credit Manuel Janisson / Champagne Janisson & Fils. DC Flynt MW Domaines & Estates is the usual US importer line. Janisson & Fils was sold to Moët & Chandon (LVMH) in 2019 — ownership changed; the named grower-house on the label is still the check. We will not invent a 2026 warehouse price.
Most NV brut sits near 12% ABV. A NIAAA standard drink is 5 ounces of ~12% wine. A 750 mL is about five drinks. See Champagne ABV and Champagne drink count.
What the label supports
| Line | Who is named | What it is not |
|---|---|---|
| Producer / vineyards | Manuel Janisson, Verzenay (back label / Costco Wine Blog) | Not a bulk “California champagne” |
| Importer | DC Flynt MW (typical) | Not the grower |
| Corporate parent of the house | Janisson estate sold to Moët/LVMH in 2019 | Not “this is Moët Impérial in a Kirkland dress” unless a label says so |
| ABV | Read the neck — NV brut often ~12% | Not a CIVC-fixed single % |
Four 5-ounce pours are four drinks. NIAAA binge pattern is a health line, not a target. Freeze risk is ethanol–water math, not a party trickdoes Champagne freeze.
Sources
- Costco Wine Blog: Manuel Janisson / Janisson & Fils, Verzenay.
- Back-label “Verzenay of Manuel Janisson” reported in producer roundups. — read the bottle in hand.
- 2019 Moët purchase of Janisson: trade press / Gault&Millau profiles. Ownership ≠ a Moët dump claim.
- NIAAA 5 oz / ~12% (December 2025). No 2026 MSRP.