Order a 500ml glass of local beer, and the barman would half fill it with cold beer. Then grab a pipe to add the frothfy head, with a pressurized tap lever!
True, the law in the UK dictates that a head on Guinness is included in the pint. But drinkers of Greene-King IPA Bitter (for example) are legally allowed to request a FULL pint of ale, with no froth...
Cheers- AL
