Irish whiskey, Scotch whisky and bourbon are all whiskeys, but three things set them apart: where they're legally allowed to be made, what grains go into them, and the casks they're aged in. Irish whiskey is made on the island of Ireland and matured for at least three years; Scotch is made in Scotland and aged at least three years too; bourbon is made in the United States from at least 51% corn and aged in brand-new charred oak barrels. The result is three very different drinks — Irish tends to be smooth and approachable, Scotch is often rich or smoky, and bourbon leans sweet and full-bodied.

Where is each one made?

Geography is the first and strictest rule, and it's not a marketing flourish — it's the law. Irish whiskey must be distilled and matured on the island of Ireland, which includes both the Republic and Northern Ireland. Scotch can only be made in Scotland. Bourbon must be made in the United States — and while its spiritual home is Kentucky, it can legally be produced in any US state. Move the same recipe across a border and it has to change its name: a bourbon-style spirit made in Ireland is just Irish whiskey, and a malt whisky made in Kentucky can't call itself Scotch. The place is baked into the name.

What grains go into them?

This is where the flavours really start to split. Bourbon is corn-led: at least 51% of the mash must be corn, usually rounded out with rye, wheat or malted barley, and that corn is what gives bourbon its sweet, rounded character. Scotch comes in two main camps — single malt, made entirely from malted barley at one distillery, and blended Scotch, which mixes malt with lighter grain whisky. Irish whiskey is the most flexible of the three, showing up as single malt, single grain, single pot still (a distinctively Irish style using malted and unmalted barley) and blends that marry them together. Quick shortcut: bourbon thinks in corn, Scotch thinks in barley, and Irish whiskey happily plays the whole field.

How long — and in what — are they aged?

All three must spend serious time in wood, but the wood itself is the secret. Irish whiskey and Scotch both carry a legal minimum of three years' maturation in casks, and they're usually aged in used barrels — often ex-bourbon or ex-sherry — which pass on gentler, more layered flavours. Bourbon plays by a different rule: it must be aged in new, charred oak barrels that can only be used once. That fresh, flame-toasted wood is where bourbon gets its big hits of vanilla, caramel and baking spice — and it's also why those used bourbon barrels then sail off to Ireland and Scotland for a second life. Nothing goes to waste. A quick myth-buster on age: bourbon has no overall minimum ageing period, though it needs two years to be called "straight bourbon". Older isn't automatically better — it's about balance, not just years on a label.

Is Irish whiskey always triple distilled?

It's the most repeated "fact" about Irish whiskey — and it isn't actually a rule. Triple distillation is the Irish tradition, and it's a big reason Irish whiskey has a reputation for being smooth and easy-drinking, but there's no law requiring it. Some Irish distilleries double-distil, just as a handful of Scottish distilleries triple-distil. The honest version: triple distillation is the norm in Ireland and the exception in Scotland, but neither is set in stone.

Why does Scotch taste smoky and bourbon taste sweet?

Two ingredients do most of the heavy lifting: peat and fresh oak. That campfire smokiness people associate with Scotch comes from peat — dried earth burned to malt the barley, especially in regions like Islay. Plenty of Scotch isn't smoky at all, but peat is the flavour that made the category famous. Bourbon's sweetness comes from that corn-plus-new-charred-oak combination: the corn brings natural sweetness and the freshly charred barrel layers on vanilla and caramel. Irish whiskey, by contrast, is usually unpeated and triple distilled, which is why it so often lands as the smoothest, most approachable of the three — easy to sip neat and just as happy in a cocktail.

What's the easiest one to start with?

If you're new to whiskey, Irish is the friendliest front door. It's typically smooth, lightly sweet and unpeated, with none of the smoky intensity that can ambush a first-time Scotch drinker and less of the high-proof punch some bourbons carry. Pour it neat, drop in a cube of ice, or build it into a highball or an Irish coffee — it rarely puts a foot wrong. From there, your palate will tell you whether you want to chase the smoke of Scotch or the sweetness of bourbon next.

Where does Flying Tumbler fit in?

Flying Tumbler is Irish through and through — born and blended in Co. Carlow by brothers Thomas and Patrick Walsh. It's a blend of triple-distilled malt and grain whiskey, non-chill filtered with no added colouring, built to be smooth enough to sip neat and versatile enough to mix. In other words, it sits at the approachable end of the whiskey world, with a bit of wit and a good yarn attached. It's named after a bold little tumbler pigeon famous for its acrobatics and for always finding its way home — which, when you think about it, is exactly what a good whiskey does too. Chase stories, not status, and bring one home.