If you’re looking to cut back on coffee, this option gives you the taste with less caffeine. Some makers use chemicals or gases, like carbon dioxide, to remove the stimulant. The Swiss Water Method uses only water. Sellers must remove 97% of the caffeine from a bean to call it decaffeinated. After that, it’ll only have 3 milligrams to 12 milligrams per cup, compared with 100 milligrams in a regular cup.