Origin of the 'Singapore Sling'

You can trace the Singapore Sling to Singapore’s Raffles Hotel, where bartender Ngiam Tong Boon likely refined an older gin sling into a pink, fruit-forward drink between 1899 and 1915. Its pastel look probably helped women order alcohol discreetly in colonial society, while ice, pineapple, and soda suited the tropical heat. The twist? The original recipe was lost, so today’s famous Raffles version comes from later notes and reconstructions. There’s more behind the myth and the mix.

Key Takeaways

• The Singapore Sling is most closely linked to Raffles Hotel’s Long Bar in Singapore, where it likely took shape between 1899 and 1915.
• Bartender Ngiam Tong Boon is widely credited, though evidence suggests he likely refined and popularized an existing pink gin sling.
• The drink evolved from the older gin sling, a sweetened spirit-and-soda drink recorded as early as 1790.
• Its pink, fruit-juice look reportedly helped women drink alcohol publicly in colonial Singapore without social scandal.
• The original recipe was lost, so Raffles Hotel later reconstructed its modern version from a 1936 visitor’s notes.

Where Did the Singapore Sling Come From?

Where did the Singapore Sling come from? You can trace it to the Long Bar at Raffles Hotel in Singapore, sometime between 1899 and 1915. It grew out of the older gin sling, a drink recorded as far back as 1790, but this version took on a pink hue and a more polished identity in colonial lounges.

You'd also find its rise tied to social rules. The drink looked like fruit juice, letting women enjoy alcohol publicly without scandal during the colonial era. That clever disguise helped Raffles widen its clientele. Much like the accidental invention of the teabag transformed how people consumed tea, small shifts in presentation can quietly reshape entire drinking cultures.

Early mentions of pink slings appeared by 1903, and cocktail books documented the drink by 1922, with the Savoy including it by 1930. Even so, barroom folklore still surrounds its exact early formula and original name today. It was also sometimes known as the Straits Sling, reflecting Singapore's place within the Straits Settlements. The original recipe was later lost after the 1930s, and the hotel's modern version was recreated from a 1936 visitor note.

Who Was Ngiam Tong Boon?

Ngiam Tong Boon was the Hainanese bartender most often credited with creating the Singapore Sling at Raffles Hotel’s Long Bar. Raffles Hotel has said its records support an estimated creation date of 1915 for the cocktail. If you trace his Hainan roots, you find a man shaped by poverty, migrant hardship, and a background far removed from colonial luxury. Accounts describe him as ethnically Hainanese, raised in primitive village conditions before leaving home and remaking himself at sea and in Singapore. He was born on Hainan Island and grew up in a subsistence rice-farming village marked by barefoot labor.

At Raffles, you’d know him as a skilled bartender who rose to Bar captain and, by some hotel records, head bartender. Family members later defended his authorship of the drink, especially nephew Ngiam Dee Saun and grandson Arthur Ngiam. Yet his legacy carries mystery too: relatives disputed dates, challenged stories about a preserved recipe, and left you with a figure both celebrated and elusive.

When Was the Singapore Sling Created?

Pinning down when the Singapore Sling was created proves harder than naming the bartender most often linked to it. You’ll usually see 1915 given as the official date at Raffles Hotel, yet the timeline stays clouded by historical ambiguity. Sources place its development sometime between 1899 and 1915, and no surviving record captures the exact moment of creation. The drink is most often credited to Ngiam Tong Boon, the Hainanese bartender at Raffles Hotel’s Long Bar, a detail that anchors the story even when the exact date remains uncertain. He is also described as the Long Bar’s head bartender in 1915 and a Hainan islander, reinforcing the Raffles connection.

If you trace the paper trail, you’ll find sling references in 1897 newspapers, pink slings in 1903, and a 1913 recipe that already resembles the drink. Later sources add more confusion: Robert Vermeire printed it in 1922, the Savoy Cocktail Book listed it in 1930, and a 1936 visitor note helped rebuild a lost recipe. Those publication discrepancies make any single creation date feel more like tradition than certainty today.

Why Was the Singapore Sling Invented?

Although the Singapore Sling refreshed drinkers in Singapore's tropical heat, it seems to have been invented for a more strategic reason: to let women drink alcohol in public without breaking the social rules of the early 1900s. At Raffles Hotel's Long Bar, you could see how female discretion shaped the drink's pastel look. By resembling fruit juice, it let women enjoy gin without attracting stigma or criticism. Raffles Hotel later claimed the drink was invented there in 1915, reinforcing its image as a socially savvy creation in the Long Bar. The bar's creative culture stood in contrast to the era's more volatile settings, such as the U.S. diplomatic missions that faced severe security threats during periods of regional conflict.

You can also view its creation as smart cocktail marketing. Ngiam Tong Boon served a cold, sweetened sling with ice and soda water, making it appealing in Singapore's humidity while widening the hotel's audience. The drink suited colonial expectations, attracted both men and women, and enhanced Raffles Hotel's reputation for inventive service. Bartenders still credit Ngiam Tong Boon with creating the drink in 1915, preserving its status as the bar's iconic signature. In short, you're looking at social strategy disguised as refreshment and style.

How the Gin Sling Became Singapore Sling

Long before the name "Singapore Sling" stuck, drinkers already knew the gin sling as a simple mix of gin, citrus, sugar, and soda. You can trace that base back to late eighteenth-century North America, where slings were chilled, sweetened spirit drinks and early precursors to cocktails. Early versions were essentially a single-serving punch, built around a balance of sour, sweet, and alcohol.

By 1900, the gin sling was everywhere, and Singapore bars served notable versions.

In Singapore, you see gin evolution happen through local taste and bartender experimentation. Similar slings circulated before 1915, and references appeared in print well before Raffles' famous claim. Much like coffee, which spread from Ethiopia to reach the Arabian Peninsula by the sixteenth century, the gin sling traveled far from its origins before finding a permanent home in a new culture.

At the Long Bar, Ngiam Tong Boon likely refined a house style between 1899 and 1915, turning a familiar sling into something distinct. That cocktail adaptation gradually linked the drink to Singapore itself, so "gin sling" gave way to "Singapore Sling" in popular memory.

What Was in the Original Singapore Sling?

At its core, the original Singapore Sling layered gin with cherry liqueur, fresh pineapple and lime juices, Cointreau, Bénédictine, grenadine, and a dash of Angostura bitters, then finished the drink with soda water and a garnish of pineapple and maraschino cherry.

This celebrated recipe is widely associated with the early 1900s at Singapore’s Raffles Hotel Long Bar, where its Raffles origin became part of cocktail history.

If you broke it down, you'd find 30 ml of gin leading, 15 ml of cherry liqueur supporting, and 120 ml of pineapple juice shaping the drink's fruity body.

Another 15 ml of lime juice sharpened it, while 7.5 ml each of Cointreau and Bénédictine deepened the citrus and herbal profile.

Ten ml of grenadine gave you the famous pink glow.

Those pineapple proportions mattered: they softened the spirit, masked the alcohol, and helped the cocktail resemble harmless fruit punch while still delivering a balanced, potent sip. This fruitier evolution reflected the drink’s early 20th-century shift from the simpler Straits Sling or Gin Sling into the more colorful version associated with Raffles Hotel.

Why Do Singapore Sling Recipes Vary?

Because the original recipe was never preserved with complete certainty, bartenders have spent decades rebuilding the Singapore Sling from scattered sources, local habits, and changing tastes. That uncertainty creates major ingredient variations, from Cherry Heering versus Luxardo to Cointreau versus dry curaçao or triple sec. Even Benedictine and grenadine shift slightly, while lime sometimes becomes lemon in older books. In side-by-side testing, recipes closest to the original differed mainly in pineapple juice amounts, which strongly affected sweetness, texture, and complexity. The drink itself descends from the older Gin Sling, which helps explain why some recipes keep soda and citrus more prominent than others.

You can also see recipe drift in the juice, bitters, and finish. Pineapple may run from 1.5 to 4 ounces, changing the drink from bright and complex to lush and sweet. Some versions add soda for sparkle, others skip it. Bitters might be one dash, two dashes, or none at all. In the end, bartender preferences shape each version, especially when sources agree only on gin and cherry brandy.

How Raffles Recreated the Singapore Sling

Raffles responded to all that recipe drift by building a house version around the story of Ngiam Tong Boon, the bartender widely credited with creating the Singapore Sling at the Long Bar around 1915.

That revival also reflects how the drink changed when pineapple juice was added later to make it sweeter and more widely popular.

You can see that archival revival in each measured step:

• gin anchors the drink
• cherry brandy and Bénédictine restore depth
• pineapple and lime sharpen the profile
• bitters, grenadine, and soda add balance
• garnish completes the Raffles presentation

Bartenders draw from archives and notes, then shake the mix for 12 seconds.

They strain it into a Collins glass over ice, top it with soda, and serve a brighter, fizzier sling than Ngiam likely poured.

You taste a recreation shaped by hotel memory, modern consistency, and the pink, pineapple-led style that keeps the Long Bar’s signature alive today.

Which Origin Claims Are Supported by Evidence?

Although the hotel’s 1915 Ngiam Tong Boon story remains the best-known origin claim, the strongest evidence supports a narrower conclusion: Boon likely helped define or popularize the Singapore Sling at Raffles, but he probably didn’t invent the idea of a pink gin sling from scratch.

When you weigh the historical evidence, earlier newspaper references matter most. You can trace gin slings in Singapore to 1897, pink slings before 1915, and a 1903 mention of “pink slings for pale people.” A 1913 report even lists cherry brandy and D.O.M., ingredients tied to later Singapore Sling formulas. That weakens Raffles’ invention claim while supporting Boon’s role in refining a famous house version. The base gin-with-sugar-and-citrus formula had already spread widely through British colonialism.

Recipe variation also fuels attribution disputes, because bartenders often changed lime, Bénédictine, or cherry brandy without following one fixed formula.