Top tips:
The original recipe calls for equal parts, but we find it a touch too sweet, so we've upped the whisky to cut through it a little more. If it's too strong, reduce it a little.
The whisky component is surprisingly flexible when it comes to recipe. It can take a lot more booze (add an extra 20ml) if that's your preference, while if you are using a heavily peated or smokey malt it still works as an ensemble even when you reduce the ml to taste.