a sense of coolness, achieved by serving at "cellar temperature" (). Light red wines drunk young should also be brought to the table at this temperature, where they will quickly rise a few degrees. Red wines are generally perceived best when served chambré ("at room temperature"). However, this does not mean the temperature of the dining room—often around —but rather the coolest room in the house and, therefore, always slightly cooler than the dining room itself. Pinot noir should be brought to the table for serving at and will reach its full bouquet at . Cabernet Sauvignon, zinfandel, and Rhone varieties should be served at and allowed to warm on the table to for best aroma. Collecting Outstanding vintages from the best vineyards may sell for thousands of dollars per bottle, though the broader term "fine wine" covers those typically retailing in excess of US$30–50. "Investment wines" are considered by some to be Veblen goods: those for which demand increases rather than decreases as their prices rise. Particular selections such as "Verticals", which span multiple vintages of a specific grape and vineyard, may be highly valued. The most notable was a Château d'Yquem 135-year vertical containing every vintage from 1860 to 2003 sold for $1.5 million. The most common wines purchased for investment include those from Bordeaux and Burgundy; cult wines from Europe and elsewhere; and vintage port. Characteristics of highly collectible wines include: A proven track record of holding well over time A drinking-window plateau (i.e., the period for maturity and approachability) that is many years long A consensus among experts as to the quality of the wines Rigorous production methods at every stage, including grape selection and appropriate barrel aging Investment in fine wine has attracted those who take advantage of their victims' relative ignorance of this wine market sector. Such wine fraudsters often profit by charging excessively high prices for off-vintage or lower-status wines from well-known wine regions, while claiming that they are offering a sound investment unaffected by economic cycles. As with any investment, thorough research is essential to making an informed decision. Production * May include official, semi-official or estimated data. Wine grapes grow almost exclusively between 30 and 50 degrees latitude north and south of the equator. The world's southernmost vineyards are in the Central Otago region of New Zealand's South Island near the 45th parallel south, and the northernmost are in Flen, Sweden,