Irish whiskey: what it is, how to serve it, how to sell it

Irish Whiskey is a protected geographical indication. Under the Irish Whiskey Technical File (lodged with the European Commission in 2014) it must be distilled and matured on the island of Ireland from a mash of malted cereals, with or without other whole grains; distilled to less than 94.8% ABV so it keeps the flavour of its materials; matured for at least three years in wooden casks of no more than 700 litres; bottled at no less than 40% ABV. Caramel colouring (E150a) may be added; charcoal filtering to strip colour may not. If a bottle says Irish whiskey, all of that is true of it.

• Single pot still: made at one distillery from a mash of malted and unmalted barley (at least 30% of each, with up to 5% other cereals) in copper pot stills. Spicy, oily, Ireland's own style. Redbreast, Green Spot, Powers John's Lane.
• Single malt: 100% malted barley, one distillery, pot stills. Bushmills 10, Teeling Single Malt, Dingle Single Malt.
• Single grain: mostly maize or wheat with some malted barley, column stills, light. Teeling Single Grain, Kilbeggan Single Grain.
• Blended: any mix of the above. Jameson, Tullamore D.E.W., Bushmills Original, Powers Gold Label: the volume of the category.

Triple distillation is common but not required. Peat is rare but legal (Connemara).

1. Use a tulip or Glencairn glass, a 35.5ml measure, no ice to start.
2. Look: colour tells you cask and age, not quality.
3. Nose with your mouth slightly open; add a few drops of water and nose again.
4. Taste: hold it for a count of five. Pot still is oily and peppery; grain is light and sweet; sherry casks give dried fruit; bourbon casks give vanilla.
5. Finish: how long and what changes.

Describe it to a customer in one line: 'spicy and creamy, finishes on green apple'. Never say 'smooth' on its own.

• Neat or with water: ask 'ice, water or neat?' Every time. A small jug of still water with a whiskey is hospitality and costs nothing.
• Irish Coffee: 40–50ml Irish whiskey, 2 teaspoons brown sugar, 120ml hot filter coffee, lightly whipped cream floated over the back of a spoon. Hot glass, sugar fully dissolved, cream cold. Attributed to Joe Sheridan at Foynes in the 1940s.
• Whiskey ginger and whiskey sour: the two cocktails that introduce blended whiskey to people who think they don't like it.
• Flights: three 20ml pours across the styles. Higher GP than three singles and the customer learns something.

Irish whiskey exports passed €1 billion in 2024, sold in 113 markets, with India the fastest-growing (+107%). The Irish Whiskey Awards move to Belfast in 2026; Dingle released its first 10-year-old single malt in October 2026. Visitors expect a pub to have a view on whiskey. A back-bar of eight well-chosen bottles across the four styles, with one line of description each on the list, outsells forty unlabelled ones. Price the premium pours with the drinks GP calculator; most Irish bars run spirits at 75–82% GP.