Both are built on ginger beer and lime, but the Moscow Mule uses vodka while the Bourbon Mule uses bourbon, which brings toffee, vanilla and oak to the glass. In the alcohol-free version, Sober Spirits W 0.0% plays that part: you keep the spiced, caramel depth of a bourbon mule without a drop of alcohol.

Yes, but the drink changes character. Ginger ale is milder and sweeter, so the cocktail loses its spicy bite; add a few slices of fresh ginger to compensate. Sparkling water with a little ginger syrup is the driest option and lets the Sober Spirits W 0.0% come through more clearly.

Copper conducts cold extremely well, so the mug frosts on contact and keeps the drink icy longer, which sharpens the ginger and the lime. It is tradition rather than necessity: a highball or tumbler packed with ice works perfectly. If you use a highball, chill it in the freezer first.

Sober Spirits W 0.0% is made from a real whisky that has been dealcoholised, so it keeps the woody, toasted notes a bourbon brings to a Mule. It is also sugar-free, which matters here because ginger beer already carries most of the sweetness of the drink.

Sweetness comes from the ginger beer and the vanilla syrup, not from the spirit. Cut the vanilla syrup to 5 ml, push the lime juice to 20 ml, and choose a dry ginger beer rather than a soft one. Fill the glass to the top with ice so the drink stays cold and the sugar reads lighter.