 When the pair decided to make "This Was a Real Nice Clambake" into an ensemble number, Hammerstein realized he had no idea what a clambake was like, and researched the matter. Based on his initial findings, he wrote the line, "First came codfish chowder". However, further research convinced him the proper term was "codhead chowder", a term unfamiliar to many playgoers. He decided to keep it as "codfish". When the song proceeded to discuss the lobsters consumed at the feast, Hammerstein wrote the line "We slit 'em down the back / And peppered' em good". He was grieved to hear from a friend that lobsters are always slit down the front. The lyricist sent a researcher to a seafood restaurant and heard back that lobsters are always slit down the back. Hammerstein concluded that there is disagreement about which side of a lobster is the back. One error not caught involved the song "June Is Bustin 'Out All Over", in which sheep are depicted as seeking to mate in late spring — they actually do so in the winter. Whenever this was brought to Hammerstein's attention, he told his informant that 1873 was a special year, in which sheep mated in the spring.
