For a limited time through Jan. 26, each Extra Charged Coffee drink will cost only $2. But while coffee and espresso are similar, they are not the same, and the swap changes the flavor. To entice customers to try it out, the brand is offering Medium Extra Charged Coffees for just $2 through January 26. Dunkins Explorer Batch is said to be the first in Dunkins new Limited Batch Series, while Dunkin Midnight will be replacing the chains current Dark Roast offering. Coffee drinkers sometimes opt for espresso when they want more caffeine, since an ounce of espresso (one shot) has 63 mg.  while a cup of coffee contains just 12 to 16 mg.
Over the years it has been known to shift completely to the dark roast in the series.
( z0 know :ARG1 ( z1 shift :ARG0 ( z2 it ) :ARG1-of ( z3 complete ) :ARG2 ( z4 roast :ARG1-of ( z5 dark ) ) :subevent-of ( z6 series ) ) :time ( z7 over :op ( z8 multiple :op ( z9 temporal-quantity :quant 1 :unit ( z10 year ) ) ) ) )
(z0 / know-01
    :ARG1 (z1 / shift-01
              :ARG0 (z2 / it)
              :ARG1-of (z3 / complete-02)
              :ARG2 (z4 / roast-01
                        :ARG1-of (z5 / dark-02))
              :subevent-of (z6 / series))
    :time (z7 / over
              :op1 (z8 / multiple
                       :op1 (z9 / temporal-quantity
                                :quant 1
                                :unit (z10 / year)))))
Over the years it has been known to shift completely to the dark roast in the series .
z7 :op1 z8
z8 :op1 z9
z9 :unit z10
z9 :quant 0
z0 :time z7
z0 :ARG1 z1
z1 :ARG0 z2
z1 :ARG1-of z3
z4 :ARG1-of z5
z1 :ARG2 z4
z1 :subevent-of z6