Starbucks use a number of different decaffeinated coffee blends (see below for details on how to buy these blends for home use).

The caffeine value shown here has been extrapolated from a series of tests undertaken by the University of Florida. The tests showed that a 16oz serving of decaffeinated brewed coffee had caffeine concentrations of 12 to 13.4 milligrams.

The decaffeination process involves treating the coffee beans prior to roasting. The international standard of decaffeination requires that 97% of the caffeine must be removed. The EU sets this standard at 99.9%.

The blend of beans will also have an impact as beans Coffea arabica plants have about half the caffeine of Coffea robusta.

Buy Starbucks Tall Decaf Coffee