Question: How can I warm butter quickly?
Option 0: Place a glass full of water in the microwave, heat for at least 2 min, dump out the water, place the warm, empty glass on top of the vertical stick of butter, let sit for several min.
Option 1: Place a glass full of skim milk in the microwave, heat for at least 2 min,  warm, glass of milk on top of the counter and you will have a  stick of butter, let sit for several min.
Answer: 0