Possible Clues:

• Kind of acid
• The Milky Way is not, sounding like a stopped clock
• Exerciser's acid
• Long Island covers up deed and copyright to Milky Way
• Performance in Long Island has key component from Milk
• Take steps to get first in exam concerning the Milky Way?
• Acid obtained from milk
• Acid type in sour milk
• Milk-based
• Acid variety found in milk