Amber fluid

Merrymakers brought their own beer. Those not provisioned with the amber fluid found a ready supply in the dressing room of the Hilton Base Ball Club at three cents a glass.

Beer was lumped in with the rest of booze, and for 13 awful years, not one legal drop of precious amber fluid could be found between San Francisco and New York City.

[…]for a range of amber fluids, all brewed on the premises.

Suddenly, in 1988, a vote was taken to legalise real beer in a year's time, and on 1 March 1989 the amber fluid finally flowed again.