Guinness Yeast Extract

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Guinness Yeast Extract, commonly known by its initials GYE, was a popular Irish savoury spread, made from yeast extract. It was a by-product of the Guinness beer brewing process and produced by Arthur Guinness Son & Co., Dublin. The production of GYE was discontinued in the 1950s, though many stocks in Irish cupboards lasted into the 60s.

GYE was rich in Vitamin B and had many uses.

Like all spreadable yeast extracts, GYE was eaten on slices of bread and butter. A better application was achieved by first mixing the butter and GYE thoroughly on a plate before spreading.

One or two level teaspoonfuls added to each quart of soup enriched the flavour while enhancing the nutritional value.

It could also be used as an emergency gravy without any addition except hot water for thickening. It was used to strengthen normal gravy, and flavour stews and dishes containing minced meat.

A half a teaspoonful added to a glass of hot water or hot milk produced a drink particularly suitable at moments of weariness. It was common at elevenses, teatime, and as a nightcap. This hot GYE drink, mixed with a well beaten egg, was also served to the ill and sick.

In February 2007 Marmite produced a limited edition Guinness Marmite^[1] of 300,000 250g jars of their yeast extract with 30% Guinness yeast.