Decaf coffee is a good alternative to regular coffee if you are looking to limit your caffeine intake. There are two main types of processes used to decaffeinate coffee: solvent-based (direct solvent and indirect solvent) and non-solvent-based (Swiss Water Process and CO2 Process). Both direct and indirect solvents use chemical solvents, including ethyl acetate or methylene chloride, to remove the caffeine from coffee beans. When purchasing decaf coffee, look for a brand that uses the Swiss Water Process, as it is a carbon filtration process that does not use chemicals and retains a high-quality flavor.