a pot of gold
pot of gold
A particularly large sum of money or valuable resources. Regulators chastised the financial firm for chasing pots of gold through risky investments of questionable legality rather than protect their clients' funds. You're not going to find a pot of gold going into this business, but it's definitely lucrative enough to make a living.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
a pot of goldBRITISH, AMERICAN or
a crock of goldBRITISH
COMMON If you talk about a pot of gold or a crock of gold, you mean a large amount of money that someone hopes to get in the future, or something that will bring them a large amount of money in the future. The business is now worth at least £100 billion a year — a pot of gold that attracts the most diverse people. The government and employers rejected the notion that there was a crock of gold in unpaid taxes. Note: You can also talk about a pot of gold at the end of the rainbow or a crock of gold at the end of the rainbow, with a similar meaning, though this suggests that you will never get the money. Ethan was sure there was a crock of gold waiting at the end of the rainbow if only he could get himself an agent.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012