They are the easy-to-drink cocktails that come in pretty colours and sweet flavours. But don't be fooled by their innocent appearance. These drinks often contain high amounts of alcohol and drinking too many of them can leave your head spinning... or worse. Scroll down for video . Colourful cocktails are deceptively easy to drink but can sometimes contain vast quantities of alcohol . The Zombie is a fruity cocktail made from three different types of rum, lime juice, falernum, Angostura bitters, Pernod, grenadine, cinnamon syrup and grapefruit juice . Made with high-proof alcohol and hardly any mixers, these ten cocktails are sure to floor even the hardiest of drinker. From Jungle Juice and Caribou Lou to Negroni, Death In The Afternoon and Sazerac, Femail reveals the 10 most alcoholic cocktails in the world. According to drinkaware.co.uk, men should not regularly drink more than three to four units of alcohol a day. Women should not regularly drink more than two to three units a day. One alcohol unit  equals one 25ml single measure of spirits. 1. Zombie . A smooth, fruity cocktail originally served heated, the Zombie was concocted in the 1930s by Donn Beach, a restaurant owner in Hollywood. The cocktail's ingredients were a heavily guarded secret. However, according to the original recipe, published in drinks book Sippin' Safari, the drink was made from three different kinds of rum, lime juice, falernum, Angostura bitters, Pernod, grenadine, and 'Don's Mix,' a combination of cinnamon syrup and grapefruit juice. The cocktail is so strong that Don The Beachcomber restaurants limit their customers to two Zombies apiece. What makes this so alcoholic? Three types of rum: 40 per cent ABV . Pernod: 40 per cent ABV . Angostura bitters: 44.7 per cent ABV . 2. Jungle Juice . This cocktail is made fresh fruits which have been steeped overnight in an entirely bottle of grain alcohol before being served up, in the style of punch, to unsuspecting drinkers. The recipe for this particular drink comes from The Bartender’s Black Book by Stephen Kittredge Cunningham. To bring down the alcohol levels, you can add a mixer like lemonade although this is frowned upon. Connoisseurs say that when it is made correctly it doesn't taste anything like alcohol at all. What makes this so alcoholic? 1 litre bottle of grain alcohol: 95 per cent ABV . 3. Death In The Afternoon . A classic concoction of champagne and absinthe, this luxe cocktail was invented by Ernest Hemingway and is also called Hemingway Champagne. Relatively simple to make, the recipe's original instructions appear in 1935 cocktail book and were contributed by Hemingway himself, who wrote: 'Pour one jigger absinthe into a champagne glass. Add iced champagne until it attains the proper opalescent milkiness. Drink three to five of these slowly.' The drink rarely appears on menus but can be ordered from bartenders. What makes this so alcoholic? Absinthe: 45 per cent ABV . Champagne: 12 per cent alcohol . Jungle Juice (left) is made by steeping fruits overnight in 100 per cent grain alcohol.  This Negroni (right) contains equal parts gin, Campari and sweet vermouth . 4. Aunt Roberta . Considered by some to be the strongest cocktail in the world, this drink contains 100 per cent alcohol, with absolutely no mixers. Gin, vodka, absinthe, brandy and blackberry liquor are mixed together in equal parts for a dastardly drink that will certainly pack a punch. According to folklore, the drink was created by the mixed-race daughter of a slave owner in 1800s Alabama. Roberta was said to have fled her abusive home before turning to prostitution. She then moved on to the moonshine business where she used to sell this drink to her customers looking to drown their sorrows. What makes this so alcoholic . Gin: 40 per cent alcohol . Vodka: 40 per cent alcohol . Brandy: 40 per cent alcohol . Blackberry liquor: 40 per cent alcohol . Absinthe: 45 per cent alcohol . 5. Nicolashka . Typically an after-dinner drink, the Russian Nicolashka comprises a double shot of vodka, espresso powder, lemon and sugar. The concoction is consumed by first putting the lemon, sugar and coffee in the mouth, before taking one shot of vodka. The mixture is kept in the mouth and slowly chewed before being swallowed. The second shot of vodka comes swiftly after. It's a relatively simple drink but is strong, with drinkers claiming that keeping the alcohol in the mouth allows it to be absorbed faster into the blood stream. And while booze itself is said to slow the circulation, caffeine from the espresso, together with the vitamin C from the lemon, combine with the sugar to increase blood circulation, making the alcohol reach the brain swiftly. What makes this so alcoholic . Vodka: 40 per cent ABV . 6. Sazerac . There are various ways to make Sazerac but once again the best recipe is in the drink bible The Bartender’s Black Book. The recipe here calls for between two to four ounces of Peychaud’s Bitters and two ounces of rye whiskey, with one cube of sugar. But what elevates this cocktail is the coating of absinthe on the inside of the chilled glass, which adds extra potency to the drink. The higher the alcohol content of the whisky you use, the more lethal the drink becomes. What makes this so alcoholic . Rye whiskey: 80 per cent ABV . A Bone Dry Martini, also known as Pass the Bottle, is made with pure gin or vodka and no vermouth . 7. Caribou Lou . A surprisingly pleasant tasting drink made from 151 rum, pineapple juice and Malibu, this may not be the most alcoholic cocktail on the list but as it’s incredibly easy to drink, it makes it dangerous because you can put quite a few away without realising it. 151 rum has a high alcohol content which can sneak up on you when mixed with pineapple juice, rendering you drunk before you even know it. What makes this so alcoholic? 151 Rum: 75.5 per cent ABV . Malibu: 35 per cent ABV . 8. Long Island Ice Tea . The sour mix and helping of Cola disguise this college favourite’s potency. Made with five types of alcohol – gin, vodka, tequila, rum and triple sec – this unbelievably alcoholic drink is made palatable by the addition of sweet soda and sour mix (typically made from equal parts lemon juice and sugar syrup). What makes this so alcoholic? Gin: 40 per cent ABV . Vodka: 40 per cent ABV . Tequila: 40 per cent ABV . Rum: 40 per cent ABV . Triple Sec: 40 per cent ABV . Caribou Lou (left) made from 151 rum, pineapple juice and Malibu. The higher the alcohol content of the whisky you use in a Sazarac (right)  the more lethal the drink becomes . Death in the Afternoon is a Champagne and Absinthe cocktail created by Ernest Hemingway . 9. Bone Dry Martini . One of the oldest cocktails around, a martini is made using either gin or vodka with the addition of vermouth, a fortified wine which has a low alcohol content. Removing the vermouth from this mix makes this drink bone dry; possibly one of the most alcoholic drinks you can get as it's made with 100 per cent alcohol. The drink is also known as Pass the Bottle. What makes this so alcoholic? Gin: 40 per cent ABV . Vodka: 40 per cent ABV . 10. Negroni . This classic Italian cocktail made with gin, Campari and sweet vermouth. It's a mind-blowing drink which can tip you over the edge if you have more than one. The only non-alcoholic addition to this cocktail is its orange garnish, which adds a zesty zing to the pleasantly bitter taste. What makes this so alcoholic? Gin: 40 per cent ABV . Campari: 25 per cent ABV . Vermouth: 15 per cent ABV . A variation of The Zombie, this Cuban Zombie (left)  is made with three types of aged rum and passion fruit syrup. A Long Island Ice Tea has five types of alcohol - gin, vodka, tequila, rum and triple sec - in it . Negroni with an orange twist garnish . Sazerac . Ingredients: You have three base alcohol choices - 30ml Bourbon and 30ml brandy or  60ml Bourbon or 60ml rye whiskey; 15ml sugar syrup, three dashes Creole Bitters and 5ml absinthe. Method: Choose your base alcohol then mix with the sugar syrup, Creole bitters. Rinse the glass with absinthe before pouring out your drink. Twist a lemon peel over the drink before  discarding. Negroni . Ingredients: 25ml gin; 25ml sweet vermouth; 25ml Campari; orange wedge or peel to garnish . Method: Shake all the ingredients together before serving in a chilled glass. Garnish with an orange wedge. Long Island Iced Tea . Ingredients: 15ml vodka; 15ml rum; 15ml gin; 15ml Triple Sec; 30ml lemon juice; 15ml sugar syrup; dash of Cola; Lemon wedge . Method: Shake all the alcohol in a glass, top with the sour mix (lemon juice and sugar syrup) and dash of cola. Garnish with a lemon wedge. You could make variations of this classic drink by swapping gin for Bourbon (Kentucky) or Midori for Triple Sec (Japanese) Cuban Zombie . Ingredients:  25ml Havana Especial; 25ml Havana 3 year; 25ml Havana 7 year; 10ml Maraschino Liqueur; 10ml passionfruit syrup; 10ml grenadine; 15ml lime juice; 45ml pineapple juice; dash aromatic bitter; two barspoons Havana de Maestros rum to float on top; mint sprig and half a passionfruit to garnish. Method: Mix all the ingredients in a shaker (except for the barspoons of Havana de Maestros). Pour into glass before topping with the two barspoons of rum you set aside. Garnish with a mint sprig and passion fruit. Recipes contributed by Be At One cocktail bar.
Ernest Hemingway credited for potent absinthe-Champagne cocktail .
The Zombie has three types of rum, Pernod, grenadine and a secret mix .
Bone Dry Martini is 100 per cent alcohol and also known as Pass the Bottle .