For this chain-of-thought reasoning and answer, what was the question?
The relevant sentence in the passage is: They were created in 1928 by H.B.
A: 1928
Q: Reese's Peanut Butter Cups are a popular American candy consisting of a milk, white, or dark chocolate cup filled with peanut butter, marketed by The Hershey Company. They were created in 1928 by H.B. Reese, a former dairy farmer and shipping foreman for Milton S. Hershey. Reese was inspired by Hershey and left dairy farming to start his own candy business.

Based on this passage, when did reese's peanut butter cups first come out?