Leaving a Twix candy bar in the refrigerator for over an hour will diminish the characteristic combination of cookie crunch and smooth and silky caramel, as the cooled caramel hardens to a thick, rubbery substance which is somewhat resistant to normal candy chewing. This resistance thereby reduces the underlying cookie crunch to a hardly noticeable after effect, and the very foundation upon which Twix has built its mass appeal almost entirely disappears.
Those seeking to enjoy the harmonious coincidental synchronicity of cookie crunch and caramel should thereby enjoy Twix candy bars at room temperature and are discouraged from storing the candy bars in the refrigerator.