Wineries Industry Terminology

ABV (Alcohol by Volume)

The percentage of ethanol in wine by volume, a key style and regulatory metric that correlates with perceived body and warmth.

The label lists 13.5% ABV; We aim for a lower ABV this vintage to keep freshness; Ensure ABV on the label meets regulatory tolerances

Appellation (AVA/AOC)

A legally defined geographic origin for grapes that governs labeling and often viticultural and winemaking rules (e.g., AVA in the U.S., AOC/AOP in France, DOC/DOCG in Italy, GI/PDO/PGI elsewhere).

This bottle carries the Napa Valley AVA; Under Burgundy AOC rules, Pinot Noir is required; We can’t use the sub-appellation on the label unless 85% of the fruit comes from there

Barrel Fermentation

Conducting alcoholic fermentation in oak barrels to enhance texture, integrate oak, and allow controlled oxygen exposure.

The Chardonnay was barrel-fermented for added texture; We trialed barrel vs tank fermentation to compare mouthfeel; Barrel ferments require careful temperature control

Brettanomyces

A spoilage yeast that can produce smoky, barnyard, and medicinal aromas via volatile phenols; trace levels can be stylistic, excess is a fault.

There’s a Brett-like barnyard note in this lot; The lab found 4-EP levels above our threshold; We sanitized barrels to reduce Brett risk

Brix

A measure of soluble solids (primarily sugar) in grape juice; used to estimate ripeness and potential alcohol at harvest.

We picked at 24.0° Brix; The Brix curve is plateauing—schedule harvest; Potential alcohol is roughly Brix × 0.55

Canopy Management

Viticultural practices (leafing, shoot thinning, positioning) to balance sunlight, airflow, and ripeness while managing disease and yield.

We leaf-pulled on the morning side to improve airflow; Shoot thinning reduced vigor in the high-fertility block; Tucking improved spray penetration

Cork Taint (TCA)

A musty, moldy off-aroma caused chiefly by 2,4,6‑trichloroanisole; detectable at very low concentrations and can dull fruit expression.

This bottle shows classic cork taint—damp cardboard; We test incoming corks for TCA; Affected lots can be sub-perceptibly muted

Destemming

Separating grape berries from stems prior to crushing/fermentation to influence tannin profile, herbaceousness, and cap management.

We destemmed the Syrah but kept 20% whole clusters; The destemmer settings reduced MOG; Seed extraction decreased with gentler destemming

Disgorgement

In traditional-method sparkling, the removal of sediment (lees) collected in the bottle neck after riddling, before dosage and final closure.

Disgorgement is scheduled after 18 months on lees; We lost 3% volume during disgorgement; Late-disgorged cuvées show more autolysis

Enology (Oenology)

The science of winemaking, encompassing fermentation chemistry, microbiology, and cellar practices.

She has an MS in enology; Enology interns rotate through lab and cellar; Enology data informed our nutrient additions

Estate Bottled

A regulated U.S. label term indicating the wine was produced and bottled by the winery from grapes grown on land owned or controlled by it, within the same viticultural area.

Qualifies as estate bottled since all fruit is from winery-controlled vineyards; The back label explains estate criteria; We can’t claim estate bottled for the county blend

Fining

Adding a clarifying agent (e.g., bentonite, isinglass, casein, gelatins, PVPP) that binds and removes target compounds to adjust clarity, stability, or texture.

We used bentonite to stabilize proteins in the white; Egg-white fining softened tannins in the Cabernet; PVPP reduced browning in rosé

Fortified Wine

Wine to which distilled spirit (usually grape brandy) is added, raising ABV and affecting sweetness styles (e.g., Port, Sherry, Madeira, Vermouth).

Our tawny port is fortified to 19% ABV; Add spirit at 8° Brix to preserve sweetness; Fortified skus require different tax classes

Geographical Indication (GI)

A protected designation identifying the geographic origin of a wine and, in some jurisdictions, associated standards (PDO/PGI, GI, DO, etc.).

Barossa is a protected GI; We updated labels to include the GI; GI rules restrict certain terms

Green Harvest

Removing unripe grape clusters during the season to reduce yield and improve ripeness and quality of remaining fruit.

We dropped fruit at véraison to concentrate flavors; Green harvesting aligned yields with ripeness targets; The premium block skipped green harvest due to frost losses

Harvest Date

The day grapes are picked; a critical decision balancing sugars, acids, phenolics, and logistics that shapes wine style.

The heat spike pulled harvest forward by a week; We track block-specific harvest dates for vintage notes; Night harvesting preserved acidity

Hybrid Grapes

Grapevines bred from Vitis vinifera crossed with other Vitis species, often for disease resistance or climate resilience (e.g., Marquette, Vidal, Seyval).

We trialed Marquette for cold tolerance; Hybrid whites showed lower spray needs; TTB varietal listing affects hybrid labeling

Integrated Pest Management (IPM)

A sustainable, data-driven approach to pest/disease control that emphasizes monitoring, thresholds, cultural and biological controls, and targeted chemicals only when necessary.

Degree-day models guide our spray timing; We released predatory mites as part of IPM; Scouting thresholds avoided a prophylactic spray

Irrigation — Regulated Deficit (RDI)

Intentionally supplying less water than full vine demand at select growth stages to manage vigor and improve fruit quality.

We applied RDI post-véraison to enhance color; Soil moisture probes triggered deficit setpoints; Over-irrigation early season reduced RDI benefits

Jeroboam

A large bottle format; in still wine commonly 3 liters (4 bottles), in Champagne traditionally 3 liters (size names can vary by region/style).

We bottled the reserve in jeroboams for aging; Sparkling jeroboam volumes differ from still; Large formats sell well for holidays

Key Account

A strategically important, high-volume customer (retailer, distributor, or on-premise group) requiring tailored sales and support.

The Costco buyer is a key account; Key account plans include promo calendars; We track depletions weekly for key accounts

Label Compliance (TTB COLA)

In the U.S., ensuring labels meet federal rules and obtaining a Certificate of Label Approval (COLA) covering mandatory info, claims, and class/type designations.

Submit the new label through COLAs Online; We adjusted the sulfite statement to meet TTB; The AVA claim needed 85% fruit from that AVA

Lees

Dead yeast cells and grape solids that settle after fermentation; contact enhances texture and can add toasty, brioche notes via autolysis.

The Chardonnay aged 8 months on lees; Weekly bâtonnage built mid-palate; Sparkling wines rest on lees before disgorgement

Maceration

Skin contact of juice/wine to extract color, tannins, and flavors; timing and temperature strongly influence style.

We did a 5-day cold soak; Extended maceration increased tannin polymerization; Shorter maceration kept the rosé pale

Malolactic Fermentation (MLF)

Conversion of malic acid to lactic acid by lactic acid bacteria, reducing sharpness and producing compounds (like diacetyl) that can add creaminess.

Induced MLF to soften the Chardonnay; This tank stalled at 0.2 g/L malic; Co-inoculation saved time

Natural Wine

A loosely defined movement favoring minimal intervention: native yeast, limited additives, lower sulfites, and often unfiltered wines; not a legal standard.

Native ferment, no fining, minimal SO2—marketed as natural; We disclose no-additions on the tech sheet; Shelf talkers call out zero-zero

Noble Rot (Botrytis cinerea)

A beneficial form of Botrytis that dehydrates grapes, concentrating sugars and acids for luscious dessert wines like Sauternes and Tokaji.

Botrytized berries concentrated the must; We sorted for clean noble rot in the Sémillon; Fermentation stuck due to high sugar

Oak Aging

Maturation in oak vessels (barrels, puncheons, foudres) to add flavor, tannin, and controlled oxygen exposure; species, toast, age, and size affect outcomes.

40% new French oak for 12 months; We switched to larger puncheons to reduce oak impact; Staves and chips provided economical oak influence

Organic Certification

Third-party certification (e.g., USDA Organic, EU Organic) verifying grapes are grown without prohibited synthetic inputs and that winery practices meet organic standards.

USDA Organic requires certified inputs and audits; EU organic logo added to the back label; Organic farming limited our herbicide options

pH

A measure of acid strength in wine; affects microbial stability, color, taste, and sulfur dioxide efficacy (lower pH increases stability and brightness).

The pH rose from 3.25 to 3.45 post-MLF; Lower pH improved microbial stability; SO2 targets depend on pH

Phylloxera

A root-feeding louse that devastated vineyards historically; controlled by grafting Vitis vinifera scions onto resistant rootstocks.

We re-planted on resistant rootstocks post-phylloxera; Sandy soils slowed the pest; Quarantine rules restrict plant material movement

Quality Control (QC)

Systems and procedures (lab tests, sensory panels, SOPs) to ensure wines meet defined specifications and remain consistent across lots and bottlings.

QC flagged VA drift in Tank 14; We added a bottling line check for cork taint; SOPs standardize QC sampling

Racking

Transferring wine from one vessel to another to separate it from sediment and adjust oxygen exposure.

We racked off gross lees after fermentation; Inert gas blanketed the receiving tank; Racking reduced reduction aromas

Remontage (Pump-Over)

Circulating fermenting juice over the cap of skins to enhance extraction and temperature homogeneity; an alternative to punch-downs or rack-and-return.

We pump over twice daily during peak ferment; Added air during remontage to prevent reduction; Compared remontage vs punch-down extraction

Residual Sugar (RS)

The amount of sugar left in wine after fermentation, expressed in g/L; determines perceived sweetness from bone-dry to lusciously sweet.

The Riesling finished at 18 g/L RS; Bone-dry is <2 g/L RS; Cold stabilization occurred after we arrested fermentation to retain RS

SO2 (Sulfur Dioxide)

A preservative and antioxidant used to protect wine from oxidation and microbes; managed as free and bound SO2 within legal limits.

We adjusted free SO2 to 30 mg/L post-racking; High pH required higher molecular SO2; The label includes ‘Contains Sulfites’

Sparkling — Traditional Method

Sparkling production with second fermentation in bottle, followed by aging on lees, riddling, disgorgement, and dosage (méthode traditionnelle/champenoise).

The cuvée spent 24 months on tirage; Hand riddling has been replaced by gyro-palettes; We fine-tuned dosage after disgorgement

Sustainability Certification

Programs validating environmental and social practices (e.g., SIP, LIVE, CCSW, Certified Sustainable NZ), often used in marketing and trade positioning.

We’re SIP Certified across estate vineyards; CCSW reporting is due next month; Certification helped with key retail listings

Tannin

A class of phenolic compounds from skins, seeds, stems, and oak that contribute structure, bitterness, and astringency to wine.

Seed tannins were too astringent early; Barrel tannins added structure to the blend; Polymerized tannins yielded a smoother finish

Terroir

The combination of site factors—soil, climate, topography—and human practices that shape a wine’s character and sense of place.

The limestone terroir enhances acidity; Terroir differences are clear between the two slopes; We emphasize site over cellar in branding

Titratable Acidity (TA)

A measure of total titratable acids contributing to perceived sourness, typically expressed as g/L tartaric acid.

TA measured 6.5 g/L as tartaric; We adjusted TA pre-fermentation; Higher TA kept the rosé snappy

Unit Economics

Per-unit profitability metrics (price, COGS, contribution margin, freight, discounts) used for pricing, channel strategy, and growth planning.

DTC unit economics beat wholesale by 2x margin; COGS increases hurt our contribution per case; We modeled price elasticity by channel

Varietal

A wine labeled by dominant grape variety (e.g., Cabernet Sauvignon); legal minimums for the named variety vary by region.

U.S. varietal labeling requires a minimum percentage of the named grape; A varietal Merlot line performed strongly; Blends are branded by proprietary names

Vintage Variation

Year-to-year differences in weather and growing conditions that alter wine style and quality; a key driver of sourcing and blending decisions.

The cool vintage kept alcohols down; We leaned on declassified lots in the tough vintage; NV blends mitigate vintage swings

Wholesale Channel

Selling through the three-tier system (producer to distributor to retailer/on-premise), with distinct pricing, margins, and compliance requirements.

We expanded distribution to three new states; Depletions were up 12% in Q3; Pricing must account for distributor and retailer margins

Wine Club

A direct-to-consumer subscription model for recurring sales, member perks, and higher lifetime value; a cornerstone of tasting room revenue.

Spring club run ships next week; Churn dropped after we added tiered benefits; Club AOV increased with limited releases

Xylella fastidiosa

A bacterium that causes Pierce’s disease in grapes, spread by sharpshooter insects; leads to vine decline and loss in susceptible regions.

We monitor for Pierce’s disease vectors; Riparian zones were managed to reduce sharpshooters; Infected vines were removed promptly

YAN (Yeast Assimilable Nitrogen)

The fraction of nitrogen in must that yeast can use (ammonium and amino nitrogen); critical for healthy fermentation and preventing off-aromas.

YAN was low—add DAP at one-third sugar depletion; High YAN reduced H2S risk; We adjusted nutrient protocol by varietal

Yield

Crop quantity per area (tons/acre or hectoliters/hectare); influences ripeness, concentration, and economics.

Target yield was 3.0 tons/acre for the reserve; The GI caps yield at 55 hl/ha; Green harvest helped us hit yield goals

Zero Dosage

A traditional-method sparkling wine with no sugar added at dosage (typically 0–3 g/L), yielding a very dry style.

Labeled as Brut Nature/Zero Dosage; The wine showed razor-sharp acidity without dosage; We trialed 0, 3, and 6 g/L dosage levels