‘Bryn’ has provided verifiable evidence from 1984.
A particularly unhealthy meal (especially one which is high in saturated fat) is sometimes called, with gallows humour, a heart attack on a plate. The earliest evidence for the phrase found by the OED’s researchers dates from the mid-1980s and refers specifically to the “Ulster fry”, a traditional Irish breakfast featuring fried eggs, sausages, and bacon:
The fry—potato bread, soda bread, sausages, eggs, bacon and tomatoes—is known in Northern Ireland by the diet conscious as ‘the heart attack on a plate’.
1985 Guardian 1 Nov., p. 15
Did the phrase heart attack on a plate originate in Northern Ireland? We are seeking earlier evidence, from there or elsewhere.
Posted by OED_Editor on 26 June 2013 8.15