United States Flashcards
United States Wine Laws Regulatory Body
Tax and Trade Bureau (TTB)
- The TTB defines and approves the boundaries of American wine regions
- The TTB demarcates appellations based on distinctive geographical, physical, and climatic features
American Viticultural Areas (AVAs)
- These are defined as “delimited grape-growing areas” which refers to geographic location only.
- The first AVAs were named in the 1980s, beginning with Augusta, Missouri (1980) and Napa Valley, California (1981)
US Wine Labeling Law - Variety
- 75% minimum varietal composition if from a country or state
- 85% minimum varietal composition if from an AVA
- 90% minimum in Oregon for most varieties
US Wine Labeling Law - Vintage
- 85% minimum from the vintage stated if from state or county
- 95% minimum from the vintage stated if from an AVA
US Wine Labeling Law - Appellation or AVA
- 75% minimum for country, state, or county
- 85% minimum from stated AVA
- 95% minimum from stated single vineyard
US Wine Labeling Law - Estate Bottling
-100% of the wine must come from grapes grown on land owned or controlled by the winery which must be located in an AVA
Napa Valley Geography
- The Napa Valley stretches from the San Pablo Bay 30 miles north to Mt. St. Helena. The Vaca Mountains seperate Napa from Sonoma to the west.
- The Napa River flows through the heart of the region.
Napa Valley Climate
The climate is maritime and varies depending on altitude and the influence of cool air and fog rolling off the San Pablo Bay. This morning and evening cool air and fog creates large diurnal shifts in temperatures throughout the day. The AVAs in the southern portion of the Napa Valley are highly affected by cool air and fog. This lessens as you move north up the valley.
Napa Valley Topography
The mountainous portions of Napa Valley vineyard land rises up to 2,000 feet in altitude.
Napa Valley Soil Type
Very diverse across the valley and up in the mountainous areas
Napa Valley Grape Varietals
White:
- Chardonnay
- Sauvignon Blanc
Red:
- Cabernet Sauvignon
- Merlot
- Zinfandel
- Pinot Noir
Napa Valley Viticulture
- Vineyards in the Napa Valley are planted on the high elevation slopes and hillsides or on the valley floor. These differing locaitons bring differences in intensity of color, flavor and structure in the resulting wines
- Morning and evening fogs rolling in off the bay create the large shifts in temperatures from day to night, helping retain needed acidity and imparting freshness to the wines
- The wide range of climates from south to north allows for different types and styles of wine, including cooler climate Pinot Noir and warmer climate Cabernet Sauvignon and Zinfandel.
Napa Valley Vinification
- Wines of the Napa valley are often marked by extensive use of new French and American oak barrels, lending notes of vanilla and toast to both red and white wines
- Malolactic fermentation is often employed when making white wines, especially Chardonnay, imparting rich, buttery aromas and flavors
- Sparkling wines are produced in the cooler southern areas of Napa, most notably Carneros
Napa Valley Important AVAs
- Carneros AVA
- Stags Leap District AVA
- Oakville AVA
- Rutherford AVA
- Howell Mountain AVA
Sonoma County Geography
Western edge of the North Coast, extending eastward from the Pacific Ocean to the ridge line of the Maycamas Mountains bordering the Napa Valley
Sonoma County Climate
Cooler coastal areas, with warmer zones moving inland. Climate is extremely varied and depends on proximity to the Pacific Ocean, altitude, or the inland influence of fog and cool air from the ocean flowing through a gap in the mountains called hte Petaluma Gap. The fog and cool air create large diurnal shifts from night to day.
Sonoma County Topography
Hilly or mountainous throughout
Sonoma County Grape Varietals
White:
- Chardonnay
- Sauvignon Blanc
Red:
- Pinot Noir
- Cabernet Sauvignon
- Merlot
- Zinfandel
- Syrah
Sonoma County Viticulture
- Hillsides
- Differences in elevation
- Diurnal shifts
Sonoma County Vinification
- Intense red wines, often aged in new oak barrels
- Sonoma is incredibly diverse in the types of wine made. Styles are highly dependent on climate and cooling factors.
Sonoma County Important AVAs
- Carneros AVA
- Sonoma Valley AVA
- Sonoma Coast AVA
- Alexander Valley AVA
- Russian River Valley AVA
- Dry Creeek Valley AVA
Mendocino County Geography
North of Sonoma County along the Pacific Ocean
Mendocino County Climate
Very dependent on proximity to the Pacific Ocean. Cool coastal areas and warm inland areas.