What does "decaf" coffee refer to?

"Decaf" coffee refers to coffee from which most caffeine has been removed. The purpose of decaffeination is to create a coffee option for those who enjoy the flavor of coffee but want to avoid the stimulating effects of caffeine. Typically, the process leaves a small amount of caffeine in the beans—around 1% to 2%—but significantly reduces the caffeine content compared to regular coffee, making it suitable for individuals who may be sensitive to caffeine or prefer to limit their intake.

The other choices do not accurately describe decaf coffee. Coffee with full caffeine content would not be considered decaf at all, while coffee brewed using cold water (often referred to as cold brew) does not inherently have anything to do with caffeine levels. Additionally, the notion that decaf coffee comes from a specific type of bean is misleading since decaffeination can occur with various coffee bean types, not limited to any particular variety.