3 ms·You need grapes and yeast, it just happens that the yeasts are found in the air/on the grapes.by s0rce 14y agoYou need grapes and yeast, it just happens that the yeasts are found in the air/on the grapes.jrockway 14y agoTime is the other ingredient, of which wine requires a lot.yareally 14y agoAnd force (either from a press or the bottom of someone's foot) :)