The term iced coffee is a cold version of the popular hot beverage, coffee. The name usually referrers to a specific process of brewing coffee, using cold water rather than hot. The term is synonymous with the term Toddy coffee, which actually referrers to a specific brewing system that was developed and patented by Todd Simpson in 1964 and was in fact the first patented cold Brewing system. The basic method of brewing cold coffee, wheather using the actual toddy brewing system, or using a personaly built sytem involves nearly the same procces. First grind coffee beans at a coarse setting and soak the grounds in cold water for a prolonged period of time (usually 12 hours or more). The grounds must be filtered out of the cold water after they have steeped for this period of time, thefore the grounds can either be put in a bag like filter before steeping or, similar to the Toddy system, the mixture can be fed through a filter after soaking. The end result produces a concentrate that is often diluted with water (or milk in some beverages). The biggest advantage of using cold brewed coffee is in fact the fact that it is concentrated. Pouring Hot coffee over ice often waters down the beverage, while pouring cold brew over ice does not. Studies also suggest that brewing coffee by this method extremely reduces the acidity of the beverage (somewhere near 67 percent)
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