Wine is a fermented and usually alcoholic beverage made from grapes. It tends to come in two forms, red or white, in which the different processing can yield different levels of colors found in the grape skin (which include resveratrol, anthocyanins, and other bioactives). Red wine tends to be seen as more beneficial due to higher levels of micronutrients.
Most benefit with red wine, epidemiologically, is seen with 300mL of red wine daily, plotted on a J-curve. This is due to a combination of all factors in red wine.