D1 Winemaking Choices for Different Styles of Wine Flashcards
Overview of major styles of wine and how they are made.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
Would this style of wine be hand harvested or machine harvested?
Why?
Machine harvested
- Faster than hand harvesting;
- Cheaper than hand harvesting;
- Allows cooler night harvesting;
- Helps keep prices low.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
What time of day are these grapes transported to the winery?
Why?
Overnight or early morning are optimal
- Cool grapes are less affected by oxidation and microbial spoilage, better for quality, and retain their aromatic fruity style;
- Warm grapes are more at risk of oxidation and microbial spoilage.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
How are these grapes usually pressed?
Why?
Pneumatic press
- Pneumatic press can handle large press loads;
- Can flush with inert gas to prevent oxidation and microbial spoilage;
- Helps grapes retain aromatic fruity style.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
Which must clarification choices do winemakers typically employ for this style of wine?
Why?
All methods that speed up clarification, such as flotation, centrifugation, clarifying agents
- Low levels of solids speeds up processing, thereby reducing costs.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
Is hyperoxidation performed on this style of wine?
Why/why not?
Hyperoxidation is not done
- Would reduce aromatic character of the wine
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
Are these wines typically fermented with ambient yeasts or cultured yeasts?
Why?
Cultured yeasts
- Reliable;
- Help increase aromas to retain aromatic, fruity style;
- Less risk of off-flavors.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
What vessel do these styles typically ferment in, and at what temperature?
Why?
Stainless steel at cool temperatures, 12–16°C / 54–61°F
- Stainless steel allows temperature control;
- Cool temperatures enhance and retain aromatic compounds.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
Is malolactic conversion encouraged or avoided?
Why?
Avoided
- Buttery flavors would mask the aromatics and fruity style
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
Does this style typically see lees aging?
Why/why not?
Lees aging is mostly avoided
- Takes time, monitoring, and costs money, which do not help keep costs low
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
Does this style typically see new oak aging?
Why/why not?
No oak aging
- New oak flavors are undesirable for aromatic style of wine;
- Costly.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
What type of finishing does this wine style typically see (tartrate stabilization, fining, and filtration)?
Why?
This style is typically:
- Tartrate stabilized because consumers will not accept crystals;
- Fined to ensure the wine stays clear and bright;
- Sterile filtered to ensure no faults develop in the bottle.
Inexpensive, High-Volume Dry White Wine from an Aromatic Grape Variety:
How is this style of wine typically packaged?
Why?
Glass bottle, PET, Bag-in-box, Can: all good for immediate consumption.
Screwcap: also good for immediate consumption, retains aromatic, fruity style, low cost, lower risk of cork taint.
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
Wines in this style are typically hand harvested or machine harvested?
Why?
Hand harvested
- Allows for initial sorting in the vineyard of only healthy, fully ripe bunches;
- Grapes are picked at optimum ripeness, which is better for quality.
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
How are grapes for this style of wine typically transported to the winery?
Why?
Small crates
- To limit damage, minimize crushing and the risk of microbial spoilage or fermentation starting before reaching the winery.
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
To what degree are these grapes sorted?
Why?
Initially in the vineyard, then potentially several times on a sorting table, vibrating belt, and/or with an optical sorter
- Eliminates substandard grapes (over-ripe, diseased, moldy, or sun burnt bunches/berries)
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
With what press are these grapes typically pressed?
Why?
Pneumatic or basket press
- Both are gentle and provide low extraction of unwanted phenolics
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
What are the benefits of whole-bunch pressing these grapes?
- Less oxidation, especially if grape bunches are covered with an inert gas;
- Low extraction of tannins;
- Creates a smoother mouthfeel.
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
What method of must clarification is typically used?
Why?
Sedimentation
- Involves the least manipulation;
- Solids may increase complexity of aromas and flavors
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
Is hyperoxidation ever carried out on wines of this style?
Why/why not?
Sometimes
- Hyperoxidation will oxidize the compounds which are most prone to oxidation;
- Removes bitter compounds;
- Smoother final wine;
- Less prone to oxidation later on.
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
What are the three most common fermentation vessels used for this style of wine, and what benefit does each offer?
-
Barrels
- Deepens color, gives fuller body, and better integrates oak and primary fruit flavors;
-
Neutral containers
- Preserves primary fruit;
-
Concrete eggs
- Often just a portion of the wine is fermented in eggs which gives the winemaker a blending option.
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
Why would a winemaker select ambient yeast to ferment their must?
- They’re viewed as “part of the terroir”;
- To promote distinctive aroma and flavor characteristics in the wine.
Premium Small-Volume Dry White Wine from a Neutral Grape Variety:
Why would a winemaker select cultured yeast to ferment their must?
- Reliability to ferment the must to dryness;
- Selected for their neutrality or for promoting aromatic traits;
- They may help produce a more neutral wine so that the wine showcases more of the oak flavors and characteristics.