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.
How to Make a Vodka Screwdriver. The vodka screwdriver is one of the most delicious cocktails -- and also one of the easiest to prepare. All you need to make one is some vodka, orange juice, a garnish -- and the desire to have an awesome night. Ad.