When you try a promotional food/beverage, there are two potential bad outcomes: that it will be awful, or that it will actually be delicious and your window of opportunity to drink it is small and rapidly closing.
This is actually delightful and I will be venturing out to the store to buy twenty. Peanut and coffee is an odd combination on the surface but it works so well, the peanut flavor adds a level of complex richness to the coffee.