Green’s Dictionary of Slang

1. (US drugs) very intoxicated; feeling the effects.

1985

(con. 1969–70) D. Bodey F.N.G. (1988) 103: I am cooking on that pill.

2. in fig. use, dramatic, aggressive.

2001

(con. 1975–6) E. Little Steel Toes 143: Cooking, loud angry music without sense or sensibility.