Why does dunkin donut coffee always taste a little sour?

its the acidity in their coffee. some coffees are more acidic

kelbat on December 1, 2009, 2:37 am

I like to counter act with more sugar.

MrsCullen on December 1, 2009, 2:54 am

acidic level....or they don't put enough ground coffee ....more water less money

liss on December 1, 2009, 5:31 am