Learn & Explore

The 2020 wildfire season didn't just burn through forests. It burned through inventories.

Across Oregon, California, and Washington, winemakers opened tanks that fall and found the same thing: volatile phenols embedded in the fruit, released during fermentation as free compounds — the chemical signature of smoke taint. Burnt ash. Acrid smoke. Medicinal bitterness. Notes that no amount of blending or fining could fully resolve. Lots that had been months in the making were suddenly worth a fraction of their value, or nothing at all.

The wildfire problem is not going away. The question for winemakers isn't whether smoke taint will happen again — it's what tools exist to recover value when it does.

In December 2024, the Sensory Panel at Oregon State University completed an independent blind evaluation of ADVINTAGE® Precision Enological Technology applied to a 2020 Oregon Pinot Noir impacted by wildfire smoke. The results provide the most rigorous third-party validation to date of smoke taint remediation using a precision enological approach.

The Real Cost of a Smoke-Tainted Lot

Before the data, the business context. A smoke-tainted lot doesn't just taste wrong — it represents a direct margin loss at a scale most wineries cannot absorb without consequence.

In 2020 alone, $601 million worth of California wine grapes went unharvested due to smoke exposure concerns. The USDA's Risk Management Agency paid out $227 million in associated crop insurance claims to growers in that single year — $91.8 million in Napa County and $80.2 million in Sonoma County alone. Industry estimates suggest between 165,000 and 325,000 tons of California wine grapes were lost to actual or perceived smoke damage, at a total value exceeding $500 million.^[4]

That was one year, in one state. As wildfire seasons grow longer and more severe, the cumulative exposure for wineries across Oregon, Washington, and California is increasing every year. For individual operations, value erosion on smoke-affected lots runs 30 to 50 percent of full market price — and the options have historically been limited: blend down and dilute the problem, sell in bulk at a significant discount, or discard the lot entirely.

Each option is a loss. What the industry has lacked is a credible recovery pathway — a tool that actually works at the sensory level to restore the wine's commercial viability without masking its varietal character.

What Smoke Taint Actually Does to Wine

Smoke taint is a chemistry problem before it is a sensory problem. When wildfire smoke penetrates a vineyard during critical ripening periods, volatile phenolic compounds — primarily guaiacol, 4-methylguaiacol, and related compounds — are absorbed by the grape berry and bound to sugars as glycosides.^[1] In this bound form, they are largely imperceptible.

The problem emerges during fermentation. Enzymatic and acid hydrolysis cleave the glycoside bonds, releasing the free volatile phenols into the wine matrix.^[2] These free compounds are highly volatile and bind readily to olfactory receptors, producing the characteristic burnt, ashy, and medicinal notes that define smoke-tainted wine.

Standard remediation approaches — activated carbon treatment, reverse osmosis, spin cone column — can reduce free volatile phenol concentration but often strip desirable aromatic compounds in the process, leaving the wine flat and stripped of varietal character. The challenge is not simply removing the negative. It is restoring the positive.

What the Oregon State University Study Measured

The study was designed to evaluate whether ADVINTAGE® could reduce the perception of smoke taint attributes while preserving — and potentially restoring — the wine's inherent sensory profile. ADVINTAGE® is applied post-fermentation as a precision micro-dose — no new equipment, no additional labor, no changes to existing production processes.

A trained sensory panel of 22 participants conducted a blind evaluation of two samples: one treated with a precision micro-dose of ADVINTAGE®, one untreated control. Panelists had no knowledge of which sample was which. The evaluation used CATA (Check-All-That-Apply) and Line-Scale methodology. Statistical analysis employed Cochran's Q test, canonical variate analysis, and chi-square asymptotic approximation. A Principal Component Analysis confirmed distinct separation between treated and untreated samples. The wine: 2020 Oregon Pinot Noir, selected specifically because of its documented smoke taint exposure from that season's wildfires.

The Results

The preference data is unambiguous. 64% of trained panelists preferred the ADVINTAGE®-treated wine, at a statistical significance of p < 0.0001 — a threshold that places this result among the most decisive in enological sensory research.

The attribute-level data is equally instructive. Smoke taint perception — burnt, ashy, campfire, medicinal — showed significant reduction in the treated sample. Red fruit character showed significant increase. The PCA confirmed that the treated samples clustered in a distinct region from the smoke-tainted controls, demonstrating that ADVINTAGE® did not merely suppress the negative attributes but produced a measurably different and superior sensory profile.

This distinction matters for a winery evaluating a recovery tool. The goal is not to make a smoke-tainted wine taste less smoky. The goal is to restore the wine's inherent varietal expression — the fruit, the structure, the finish — that the smoke was suppressing. The OSU data confirms that ADVINTAGE® achieves this.

How ADVINTAGE® Works at the Sensory Level

ADVINTAGE® is a fermented botanical formulation containing over 100 phytochemical compounds derived from food-grade plant extracts. It operates through Non-Reactive Sensory Profile Modulation — engaging the same gustatory and chemosensory receptors that shape aged wine profiles, without altering the wine's molecular structure.^[3]

The wine's core chemistry — pH, titratable acidity, alcohol, phenolic composition — remains completely unchanged. What changes is the sensory interface: the way those chemical components are perceived at the receptor level. In the case of smoke-tainted wine, ADVINTAGE® suppresses the perception of the free volatile phenol signal while allowing the wine's inherent fruit and structural character to register more fully.

The varietal character of the wine is not masked. It is unmasked.

What This Means for Your Winery

The OSU study was conducted on a real affected vintage under independent scientific conditions. It was not a laboratory simulation. It was not a controlled formulation exercise. It was a blind sensory evaluation of a wine that had been damaged by actual wildfire smoke, evaluated by trained professionals with no knowledge of which sample was treated.

At p < 0.0001, the probability that this result occurred by chance is essentially zero.

For a winery facing a smoke-tainted lot, this translates directly to the balance sheet. A lot worth $100,000 at full market price, facing a 30 to 50 percent value reduction without intervention, represents a potential loss of $30,000 to $50,000. ADVINTAGE® offers a validated recovery pathway — not a guarantee, but a scientifically demonstrated mechanism for restoring the sensory qualities that determine commercial value. Bench trial results are measurable within days of application.