Green’s Dictionary of Slang

cook up v.

[ext. of cook v.1 ]

1. [mid-18C; 1910s] to tamper with, to falsify; thus n. cook-up, an act of cheating.

2. [mid-18C+] to invent.

3. [mid-19C] to counterfeit, to forge.

4. [1920s] to happen, to develop.

5. to manufacture or prepare drugs.

(a) [late 19C–1960s] to prepare opium for smoking.

(b) [1920s–40s] (US Und.) to boil nitroglycerine out of dynamite.

(c) [1920s+] to prepare an injection of a narcotic drug, usu. heroin, by heating a measure of the powdered drug plus some water in a teaspoon or bottle cap.

(d) [1980s] to turn cocaine into freebase by heating it up [see freebase v.].

(e) [1980s+] to make crack cocaine from cocaine hydrochloride base.

(f) [1980s+] to manufacture methamphetamine.

6. [1900s] to make.

7. [1930s–50s] (US black) to enjoy oneself, to have a good time [cook v.1 (16)].

In phrases

cook up a pill (v.)

[20C+] (drugs) to prepare a pipe of opium.

cook up a storm (v.)

[1960s] (US) to advocate enthusiastically.

cook up with (v.) [? play on hot adj. (1a)]

[1980s+] (US campus) to ‘neck’ with, to pet.