What method is commonly used for preparing iced coffee?

Brewed hot and cooled down quickly is a commonly used method for preparing iced coffee. This approach involves brewing coffee at a higher temperature and then rapidly cooling it down, often by pouring it over ice or using other cooling techniques.

This method takes advantage of the full extraction of flavors and oils that come from brewing hot coffee, resulting in a robust flavor profile. Once brewed, cooling it quickly helps to prevent over-extraction and bitterness that might occur if the coffee were left to sit at room temperature.

On the other hand, cold brew typically involves steeping coarsely ground coffee in cold water for an extended period, which results in a different flavor profile that is distinct from that achieved through the hot brew method. Blending with ice is more associated with frappés rather than traditional iced coffee preparation, and using instant coffee with cold water doesn't reach the depth of taste present in freshly brewed coffee. Thus, while all methods may be valid in some context, the hot brew technique is a widely recognized and effective method for making iced coffee.