Bartenders have revealed the drink order that immediately raises alarm bells to staff members. 

Global mixology experts from the hospitality industry unanimously agree on one specific cocktail that incorporates five different spirits.

Bar staff claimed once customers order this drink they know they are out to get ‘black out’ drunk and will eventually become ‘loud and obnoxious’.

Meanwhile another bartender said once someone orders the beverage he starts ‘scanning for the nearest security guard’.

This cocktail is none other than the famous Long Island Iced Tea, which features a blend of vodka, tequila, light rum, triple sec, gin, and a hint of Coca-Cola.

Morgan Robison, the beverage director at the Taiwanese restaurant Wenwen, asserts that enthusiasts of this potent cocktail typically aim to consume a large amount of alcohol.

Speaking to the Thrillist, he said: ‘For the most part, it is for people who are here to drink and think, “this is the fastest way to get to where I’m going”.’

The cocktail’s rowdy reputation has also spiked the interest of other bartenders around the world as some say no one is drinking it for the enjoyable flavour.  

Marisol Delarosa, a managing partner of the NYC bar Brass Monkey, told The Takeout that people are not ordering a Long Island Iced Tea because ‘they like way it tastes’.

‘The person [ordering] wants to black out and will probably be loud and obnoxious about getting to that state of drunkenness.’

Meanwhile Daniel Meursing, who is an event and operations manager, revealed he also worries about the drink order. 

One of his employees joked: ‘When someone orders a Long Island, I start scanning for the nearest security guard.’

Jamie Robinson, a former bartender and assistant food and beverage manager at Outrigger Reef Waikiki Beach Resort, also told Business Insider the popular cocktail is a ‘big no-no, especially at a busy bar’.

For Jamie she claimed the time to make the drink is also a big downside when the bar is busy.  

‘You’re likely only going to order one or two unless you plan on ending up on the floor at some point during the evening,’ she added.

It comes after experienced bartenders and mixologists from across the US revealed the 10 drinks you should never order in a crowded bar.

The expert mixologists told also Business Insider about the concoctions they dread customers requesting as well as the reasons why.

First up, Jamie urged patrons to steer clear of a Long Island iced tea because it involves too many ingredients.

Next on her list of drinks to avoid were mojitos which the expert described as ‘a labor of love, to say the least.’

She said that to make ‘a proper mojito should feature hand-muddled limes and mint.’

White Russians also appeared on Jamie’s drinks to steer clear of on a busy night due to the heavy cream needed.

‘Save your bartender the time of having to go check to see if they have some in the back, and save your stomach from mixing dairy with whatever else you might be inclined to drink that night,’ she dished.

Elsewhere, executive bartender Zulay Duran, who works at Taste My Aruba, advised customers skip out on spicy margaritas.

‘This is a specialized drink that takes careful execution, which isn’t feasible for most bartenders on a busy night,’ she said, instead urging people to choose a simple glass of wine.

Bar manager Aliz Meszasi, who works at The Fed at The Langham in Boston, also asked that customers avoid ordering a Bloody Mary on a night out – insisting it is only a brunchtime drink.

Anything containing egg whites – such as a gin fizz – is also not appropriate to order during busy periods, according to the head bartender at The Rum House, Nick Jackson.

He said that it is ‘very labor intensive’ and requires several minutes of preparation.

Additionally, Zach Pace, a beverage expert at Ten Rooms, said pina coladas are best reserved for the beach.

‘Please don’t make the bartender fire up a blender in the middle of a crazy service,’ he pleaded.

Many experts agreed that Irish coffee and espresso martinis should also be avoided – telling potential patrons to get their caffeine fix from a café instead.

Sunshine Foss, founder and CEO of boutique liquor store Happy Cork, requested that customers dodge layered shots that require multiple spirits.

‘Bartenders are already under pressure to serve drinks quickly, ordering layered shots just doesn’t make sense for anyone,’ she dished.

Last but not least, mixologist Joshua Lucas, from Kiki’s in California, recommends for bar goers to not order personalised drinks.

He comedically said: ‘Be specific but not a poet.’