Rum Fruit Cup

The Rum Fruit Cup is Difford's Cup No.4 — one entry in a deliberate series of spirit-based "fruit cups" that Difford's Guide founder Simon Difford built through the 2010s, modeled on the vintage Pimm's range, where No.4 was historically the rum-based cup. Difford created this specific build in June 2017 at the Cabinet Room, his home bar in London, pairing light gold rum with dry curaçao and sweet vermouth before lengthening it with ginger ale and cola. It isn't an old, anonymously handed-down recipe passed through generations of bartenders; the attribution here comes straight from its own creator's guide, since he's the one who made it, and no independent cocktail history corroborates a date or story beyond that. What it does inherit honestly is the shape of the 19th-century British "cup" tradition — a spirit, a fortified wine, bitters, and fizz, finished with fruit and a herb sprig — the same lineage that produced Pimm's itself.

A Modern Cup, Honestly Labeled

Fruit cups are a Victorian British invention — house spirits stretched with fortified wine, bitters, and soda, dressed up with fruit and herbs, and served from small tankards called "cups." Pimm's grew out of that tradition in the 1820s, and by the 1930s-50s it was sold as a numbered range: No.3 on brandy, No.4 on rum, No.5 on rye, and so on. That historic No.4 slot is exactly the one Simon Difford revived when he built his own rum-based cup at the Cabinet Room, his home bar, in June 2017.

Beyond that, there's not much more to say. Difford is a real, well-documented figure — founder of Difford's Guide and CLASS magazine since the late 1990s — and the Cabinet Room is a real bar, just a private one. But the recipe's date, method, and story all trace back to a single source: Difford's own site. No other bar, book, or historian has weighed in on it, which is unsurprising for a drink this recent and this self-attributed, but worth saying plainly rather than dressing it up as folklore.

The Spec

Difford's original calls for equal parts rum, curaçao, and vermouth, topped with double that volume split between ginger ale and cola — 5/6 oz of each spirit against 1 2/3 oz each of the fizz. We've rounded those to clean bar fractions (3/4 oz and 1 1/2 oz) that keep the same 1:1:1:2:2 ratio without asking anyone to measure in sixths of an ounce.

Bitters and borage tie it back to Pimm's

The two dashes of Angostura do the same job bitters do in a real Pimm's Cup — adding a spiced backbone under all that fizz and sweetness. Difford's garnish list even calls for a borage flower, the classic Pimm's Cup trim, alongside the more expected lemon, orange, strawberry, and mint. Borage is easy to skip if you don't grow your own, but it's the detail that most directly ties this modern build back to the 19th-century category it's imitating.

Rum and cola, not rum and juice

This isn't built on pineapple or passion fruit the way most rum drinks in this shape are — it's built on ginger ale and cola, which is a very British-highball move dressed up in fruit-cup clothing. Difford himself is upfront that the fruit garnish is there to look the part more than to season the drink; the flavor that actually carries it is the rum-and-cola combination underneath.

Curaçao and vermouth aren't optional extras

Because all three base ingredients are equal parts, the curaçao and vermouth aren't background seasoning the way a quarter-ounce liqueur might be elsewhere — they're a third of the drink's base each. Difford has noted that a lower-proof, lower-sugar curaçao substitute will throw the balance off; match strength and sweetness to the original if you're swapping brands.

Bottom Line

No centuries-old pedigree to lean on here, and none claimed — just a carefully proportioned modern cup, built by someone who's spent thirty years studying the category he's borrowing from, that happens to land exactly where a rum-and-cola highball dressed in fruit and mint should.