Choked flow is a fluid dynamic condition associated with the Venturi effect. When a flowing fluid at a given pressure and temperature passes through a restriction (such as the throat of a convergent-divergent nozzle or a valve in a pipe) into a lower pressure environment the fluid velocity increases.
Red wine varietals that tend to benefit from a good bit of oak include: Pinot Noir, Cabernet Sauvignon, Merlot, Pinotage, Chianti, Zinfandel, Nebbiolo, Tempranillo and Syrah. White wine varietals that are receptive to oakâs influence include: Pinot Grigio, Pinot Blanc, Sauvignon Blanc, Semillon and of course Chardonnay.
Sweet, sparkling wines. Brachetto d'Acqui, a delicious, red, sparkling wine with flavors of rose petals and strawberries. To obtain the typical aromatic taste, fermentation is interrupted at an alcohol content of 5 percent alcohol by volume. It is produced with black grapes of the same name (brachetto). It is probably one of the only DOCG wines named after a grape variety instead of a geographical area. Also exists as still dessert wine. Moscato d'Asti, a sweet semi-sparkling wine made from moscato bianco grapes.