It is often desirable to know which alcoholic beverages contain the most alcohol. Since alcoholic beverages come in different-sized containers with different alcohol percentages, this can sometimes be difficult to figure out. Collect a few different kinds of alcoholic beverage, e.g. a bottle of vodka, a can of beer, a bottle of wine and a bottle of sake. Identify the bottle with the least amount of liquid inside it and figure out how many of those samples fit into each one of the other samples. For example, assuming the 355 milliliter can of beer is the smallest, notice that two of these cans of beer have the same volume as one 710 milliliter bottle of wine. You can then take the percentage of each sample and calculate how much alcohol each sample has relative to the other.