Mastermind is described as the anti-acid coffee (alkaline, in other words) with some health aficionados claiming that they have heightened mental alertness after a cup of this coffee.
(That’s where the name comes from.)
Many people claim to have enjoy the energy this coffee naturally provides but without any jitters.
Perhaps a bit less flavorful than some other low-acid coffees, Mastermind certainly is one that lives up to the low-acidity claim.