In viticulture, consultants are in various fields such as soil Science. Weingarten Care, Cellar technology and winemaking as well as sales and marketing. Such specialists are particularly in demand for the founding or reorganization of wineries and cellars. Also many supermarket chains, restaurants and airlines can be advised by such. The top people are mostly trained oenologists and or ampelographers, One of the most famous and first is the legendary Russian André Tchelistcheff (1901-1994), first in California Napa Valley and later also worked in Europe. The German agricultural engineer and author of many wine specialist books Hans Ambrosi (1925-2012) was 11 years in South Africa Active at various wineries.
Also internationally active was the oenologist Professor Émile Peynaud (1912-2004). His French successors were trained in Bordeaux Michel Rolland (* 1947), who advised more than 100 wineries worldwide during his heyday, and increasingly also internationally Stéphane Derenoncourt (* 1963). A well-known consultant in Italy is Riccardo Cotarella (* 1948). Only active in his homeland is the Californian David Abreu, The "Hungarian Wine Wizard" Tibor Gál (1958-2005) earned his reputation mainly in Italy. An exceptionally profound specialist regarding Varieties determination was the Frenchman Professor Pierre Galet (* 1921). He offered advice on the suitability of grape varieties for specific soils worldwide. For the overseas global advisors, the term was used Flying winemakers popular. The Wine consultant is a special orientation. Regarding the different functions and / or viticulture professions see under viticulture training,