In linking a subordinate clause and a main clause, a relative pronoun functions similarly to a subordinating conjunction. Unlike a conjunction, however, a relative pronoun does not simply mark the subordinate (relative) clause, but also plays the role of a noun within that clause.
The main ingredient in most vodkas is some kind of grain, such as wheat, corn or rye. Potatoes are another common base ingredient for vodka, according to About.com.
(Fermentation means feeding sugar to yeast, so that the yeast can produce alcohol.) Today, most vodka is made from fermented grains such as sorghum, corn, rice, rye or wheat, though you can also use potatoes, fruits or even just sugar.ost vodka is 30 to 40 percent ABV. Rectified spirits, like the American brand Everclear, reach 95 to 96 percent ABV. The first records of vodka come from ninth-century Russia and eighth-century Poland.