Wine Ontology

Winemaking Techniques

Production methods across the wine lifecycle — linked to styles, grapes, regions, descriptors, and serving in the knowledge graph.

Aging Vessel

Amphora Aging — Amphora aging matures wine in clay vessels — Georgian qvevri being the ancient archetype — allowing …
Barrel Aging — Barrel aging matures wine in oak casks, allowing slow micro-oxygenation and oak flavor integration. …
Bâtonnage — Bâtonnage stirs lees back into suspension during barrel aging, amplifying mouthfeel and autolytic ch…
Concrete Egg Aging — Concrete egg fermenters use an ovoid shape to create natural convection currents that keep lees in s…
Concrete Tank Aging — Concrete tank aging uses neutral cement vessels that allow slight micro-oxygenation without oak flav…
Lees Aging — Lees aging keeps wine in contact with dead yeast cells after fermentation, adding texture, complexit…
Stainless Steel Aging — Stainless steel aging holds wine in neutral, airtight tanks that preserve primary fruit and crisp ac…

Devatting — Devatting drains fermenting wine off the grape solids into a clean vessel, separating free-run wine …
Pigeage — Pigeage pushes the floating grape cap down into fermenting must using a plunger or foot, extracting …
Pumpover — Pumpover draws fermenting juice from the tank bottom and sprays it over the floating cap, extracting…
Saignée — Saignée removes juice from a red wine tank early in maceration, concentrating the remaining red whil…

Cold Fermentation — Cold fermentation runs at lower temperatures (often 50–60°F / 10–15°C) to preserve delicate primary …
Inoculated Fermentation — Inoculated fermentation introduces a selected commercial yeast strain to start fermentation predicta…
Native Fermentation — Native fermentation relies on ambient yeasts from the vineyard, cellar, or grape skins rather than a…
Warm Fermentation — Warm fermentation at higher temperatures (often 77–86°F / 25–30°C) drives faster extraction of color…

Blending — Blending combines wines from different tanks, barrels, varieties, or vintages to achieve balance, co…
Fortification — Fortification adds grape spirit to halt fermentation or raise alcohol, creating Port, Sherry, Madeir…
Solera System — The solera system fractionally blends wines across stacked barrels, drawing oldest wine for bottling…

Acidification — Acidification adds tartaric or other acids to must or wine to balance flabby, overripe fruit in warm…
Chaptalization — Chaptalization adds beet or cane sugar to must before fermentation to raise potential alcohol in coo…
Ice Wine Production — Ice wine production harvests grapes frozen on the vine, pressing them while solid so water stays as …
Late Harvest — Late harvest picks grapes weeks after normal ripeness, allowing sugar concentration, flavor intensif…
Noble Rot Production — Noble rot production relies on Botrytis cinerea fungus under humid conditions to shrivel grapes and …

Carbonic Maceration — Carbonic maceration ferments whole berries in a CO₂-filled tank before crushing, producing low-tanni…
Cold Soak — Cold soak holds crushed grapes at low temperature before yeast inoculation, extracting color and fru…
Extended Maceration — Extended maceration keeps wine on skins for days or weeks after fermentation completes, extracting a…
Flash Détente — Flash détente rapidly heats grapes then vacuums them to burst cells, extracting deep color and softe…
Maceration — Maceration is the soaking of grape skins in juice or wine to extract color, tannin, flavor compounds…
Semi-Carbonic Maceration — Semi-carbonic maceration combines whole-cluster carbonic fermentation with traditional crushing of a…
Short Maceration — Short maceration limits skin contact to hours or a few days, producing lighter color and softer tann…
Skin Contact — Skin contact for white wines leaves juice on skins for hours to months, producing amber or orange wi…
Whole-Berry Fermentation — Whole-berry fermentation crushes grapes gently so many berries remain intact, enabling partial intra…
Whole-Cluster Fermentation — Whole-cluster fermentation includes grape stems and intact bunches in the ferment, adding herbal, sp…

Large Oak Foudres — Large oak foudres hold hundreds to thousands of liters, offering minimal oak flavor impact relative …
Neutral Oak — Neutral oak barrels have been used multiple times until they contribute little flavor but still allo…
New American Oak — New American oak delivers pronounced vanilla, coconut, and sweet spice from wider-grain wood, often …
New French Oak — New French oak barrels impart fine-grained tannin, subtle spice, and elegant vanilla or toast notes …
Oak Alternatives — Oak alternatives — chips, staves, cubes, or powder — add oak flavor in steel tanks at lower cost tha…

Basket Press — Basket press uses a vertical cylinder with a plunger to slowly compress grapes, allowing soft draina…
Gentle Press — Gentle pressing applies minimal pressure to avoid extracting bitter seed tannins and harsh phenolics…
Pressing — Pressing separates juice or wine from grape solids after crushing or fermentation. Timing and pressu…
Whole-Cluster Press — Whole-cluster pressing loads intact bunches into a press, yielding exceptionally clean, low-phenolic…

Alcoholic Fermentation — Alcoholic fermentation converts grape sugars into ethanol and CO₂ via yeast metabolism — the definin…

Malolactic Fermentation — Malolactic fermentation converts sharp malic acid into softer lactic acid via bacteria, rounding aci…

Ancestral Method — Ancestral method bottles wine before primary fermentation finishes, trapping natural CO₂ without add…
Autolytic Aging — Autolytic aging allows dead yeast cells to break down during extended lees contact, releasing amino …
Charmat Method — Charmat method conducts the second fermentation in large pressurized tanks rather than individual bo…
Continuous Method — Continuous method runs base wine through a series of linked pressurized tanks with added yeast in ea…
Disgorgement — Disgorgement freezes the bottle neck, expels yeast sediment, and tops up with liqueur d'expédition b…
Riddling — Riddling gradually tilts and rotates bottles to collect yeast sediment in the neck before disgorgeme…
Traditional Method — Traditional method sparkles wine via a second fermentation in bottle, followed by lees aging, riddli…
Transfer Method — Transfer method starts like traditional method with in-bottle second fermentation but then moves win…

Cold Stabilization — Cold stabilization chills wine near freezing to precipitate tartrate crystals before bottling, preve…
Crossflow Filtration — Crossflow filtration pushes wine tangentially across a membrane, reducing clogging and allowing gent…
Cryoextraction — Cryoextraction freezes grapes before pressing to concentrate sugars and acids, mimicking natural ice…
Filtration — Filtration passes wine through media or membranes to remove yeast, bacteria, and particles before bo…
Fining — Fining adds agents like bentonite, egg white, or isinglass that bind to suspended particles and prec…
Micro-Oxygenation — Micro-oxygenation introduces tiny, controlled amounts of oxygen during tank aging to soften tannins …
Reverse Osmosis — Reverse osmosis filters wine through membranes to remove water, alcohol, or volatile acidity dependi…
Unfiltered Bottling — Unfiltered bottling skips or minimizes filtration to preserve texture, lees character, and microbial…