Machines to make frozen beverages were invented by Omar Knedlik in the late 1950s. The idea for a slushed ice drink came when Knedlik's soda fountain broke down, forcing him to put his sodas in a freezer to stay cool, which caused them to become slushy. The result was popular with customers, which gave him the idea to make a machine to help make a "slushy" from carbonated beverages. When it became popular, Knedlik hired artist Ruth E. Taylor to create a name and logo for his invention. She created the Icee name and designed the original logo, which is used today. Early prototypes for the machine made use of an automobile air conditioning unit.
After a successful trial of Icee machines in 100 stores, 7-Eleven in 1965 made a licensing deal with The Icee Company to sell the product under certain conditions. Two of these were that 7-Eleven must use a different name for the product, and that the company was allowed to sell the product only in 7-Eleven locations in the US, a non-compete clause ensuring the two drinks never went head to head for distribution rights. 7-Eleven then sold the product that in 1966 became known as the "Slurpee" (for the sound made when drinking them). The term was coined by Bob Stanford, a 7-Eleven ad agency director.
The Slurpee machine has a separate spout, or spigot, for each flavor at the front of a tumbler or freezer, from which spigots they dispense their own Slurpees. When Slurpees were first introduced, the dispensing machine was located behind the counter, and the clerk dispensed the product. Common flavors are frozen Cherry, Coke, and Mountain Dew, but new flavors are introduced regularly. In the Slurpee's early history, flavors rotated much more frequently than today. Slurpee flavors were given novelty names such as Pink Fink, Adults Only, Moonshine, Kissin' Cousin, Gully Washer, Sticky Icky, and Redeye.
In 1990, Dallas-based Southland Corp., 7-Eleven's founder and US operator, went bankrupt, but Seven-Eleven Japan, and its parent Ito-Yokado, bought 70% of Southland in 1991 for $430 million and quickly launched renovations of the US stores. As a result, the US chains became more efficient, though 1,218 stores closed. Following the Japanese model, the new 7-Elevens set up a weekly system to monitor inventories to ensure popular items are always in stock.
Canadians purchase an average of 30 million Slurpee drinks per year. Manitoba was crowned the Slurpee Capital of the World for the twentieth year in a row in 2019. 7-Eleven stores across Winnipeg sell an average of 188,833 Slurpee drinks per month. The rest of Canada sells an average of 179,700 per month, which makes Winnipeggers the world leader of Slurpee sales. Unlike their counterparts in America, Canadian Slurpees do not contain yucca extract which gives it the airy consistency American Slurpees are known for. 6.6 million Slurpee drinks are sold in Australia each year.
The Diet Pepsi flavor uses sodium caseinate as an anti-freezing agent (sugar is a natural antifreeze in other flavors) which only gives it the status of kosher dairy. The Piña Colada, Twizzler Strawberry, Tropicana Grape Wild Strawberry, and Monster Black flavors are not kosher. There is an updated list on the Chicago Rabbinical Council website.
In 1965–66, Icee transitioned to Slurpee in 7-Eleven stores and sales. By the spring of 1967, Slurpee machines were in all 7-Eleven stores.
In 1967, Top 40 AM radio stations were losing market share to FM stations. DJs were desperate to gain audience attention. Slurpee was a kid / teen / young adult product, the main AM radio audience. The Stanford Agency created a "media blitz" to launch Slurpee and flew agency staff to all Top 40 markets with 7-Eleven stores to introduce Slurpee and the comedy commercials with funny voices and sound effects that told stories about the Strange Things That Happened To People Who Slurp. The agency backed the Slurpee launch with a very large media budget. DJs used "drops" or snippets from the "crazy" commercials in their programs to gain audience share. The campaign became an AM radio sensation.
The Stanford Agency followed the Strange Things launch with a campaign that threw away product names like lemon-lime, cola or what have you, and instead created 26-weeks of :60 second commercials about Slurpees with Funny Names like Sticky Icky, Redeye, Moon Shine, Pink Fink, Adults Only, Kissin Cousin, and Gully Washer. These commercials were even more popular. Each flavor had a pin associated with it. There were pins made for the flavors There was also a generic pin that simply stated "I have Slurped".
In 1968, the Official Slurp Hat was offered.
In 1970, 7-Eleven released a 45 RPM 7" single record entitled "Dance the Slurp" that was given away with Slurpee purchases. The dance side was written by Tom Merriman, one of the fathers of radio jungle production. The B-side was a comedy bit detailing "strange things" that happen to people who "slurp" at 7-Eleven. The record is considered highly collectible today. In 1999, "Dance the Slurp" was sampled by DJ Shadow and Cut Chemist for their Brainfreeze mix album.
Slurpee became the top selling 7-Eleven product and kids / teens / young adults came in regularly for the latest "flavor" with less and less promotional expense. After Funny Names, the next innovation was Slurpee Cups.
In 1972, Baseball Slurpee Cups, plastic cups with illustrations of favorite players including Johnny Bench, Pete Rose and others.
In 1973, Baseball Slurpee Cups, with illustrations of current stars and early players like Honus Wagner.
In 1973, the DC Comics Super Hero Cups, a 60 cup series.
1973 Endangered Species Cups – Congress passed the Endangered Species Act (ESA) on December 14, 1973. This triggered 7-Eleven making an advanced of $250,000 representing 1-cent from the sale of more than 2-million Endangered Species Cups to the National Wildlife Federation (NWF) who purchased Bald Eagle habitat. The transfer of land to the U.S. Government and U.S. Fish and Wildlife Service took place on December 19, 1974 and came to be known as the Carl E. Mundt National Wildlife Refuge.
1975, the Marvel Series, a 60 cup series.
1977, the Marvel "Panoramic" Super Hero series.
In 1994, 7-Eleven sought to remake Slurpee's "brain freeze" campaign targeted to the adolescent MTV audience. The creative directors assigned the task of creating four new commercials to the Brothers Quay, and Boston-based Olive Jar Animation. Known for their bizarre aesthetic and influence in the stop-motion animations industry, the Quays based their "brain freeze" ad on a late 19th-century photograph of a female contortionist. In the commercial, a curtain reveals the contortionist balancing on two chairs, bending over backward to sip a Slurpee. She falls victim to "brain freeze" and turns into an ice cube.
In 2002, The World Wrestling Federation launched promotional cups featuring the likes of The Rock, Rob Van Dam, Lita with The Hardy Boyz, Stone Cold Steve Austin, Kurt Angle, Undertaker and Trish Stratus. The designs were on 40-ounce Slurpee cups and 34-ounce thermal mugs.
In 2005, 7-Eleven promoted the film "Star Wars Episode III: Revenge of the Sith" by making a Mountain Dew Pitch Black "Dark Side" Slurpee which came in a cup shaped like Darth Vader's helmet.
In 2007, as part of the Kwik-E-Mart promotion for the feature film The Simpsons Movie, Slurpees at 7-Elevens were renamed "Squishees" (the analog in the Simpsons universe) and sold in special collector cups.
Starting on November 4, 2008, 7-Eleven worked with Nexon to promote Slurpees to gamers that play on Nexon.net. The Slurpee cups had images printed on them from certain Nexon games, and a code printed on them that could be redeemed on a website for special in-game items.
Also for professional wrestling WWE's Summerslam 2010 7-Eleven offered collectible Slurpee cups of Rey Mysterio, John Cena, The Undertaker, Triple H, and Kelly Kelly. They also came with collectible straws with figures of each wrestler on them. The flavor used for the promotion was Barq's Root Beer. As well as for the 2011 SummerSlam, which again featured Cena, The Miz, 2009 WWE Hall of Famer "Stone Cold" Steve Austin, and The Rock. The flavor used for the promotion was Fanta's Berry Citrus Slam.
Every year on 11 July (7/11, month/day), 7-Eleven offered a free 7.11 fluid ounce (210 ml) Slurpee in the US and Canada thru 2014. From 2015 to 2019 & come 2021, the size increased to a 12-fluid ounce (355 ml) size. 7 Rewards members are given a free medium Slurpee loaded into their app in 2020, with the COVID-19 pandemic causing 7-11 Day's cancellation that year.
In 2010, 7-Eleven teamed up with Sony to create limited edition promotion cups for the PlayStation 3 games LittleBigPlanet 2 and Killzone 3. In 2011, a Slurpee themed t-shirt was added as DLC to LittleBigPlanet 2.
Since July 7, 2011, 7-Eleven has partnered with Cinemark Theatres marking the first time Slurpees are sold outside its parent franchise. 32 theatres were chosen in Houston, Texas; Dallas, Texas; and Portland, Oregon. This marks the first reappearance of the Slurpee brand in the Houston metro area since 1990 (all 7-Elevens in the Houston area were sold to National Convenience Stores that owned Stop-n-Go - all Houston-area 7-Elevens were rebranded as Stop-n-Gos until Diamond Shamrock acquired the franchise in the late 1990s, now part of the Valero conglomerate of crude oil refineries and retail convenience stores most commonly operated under the Valero brand with generic names, though some Texas-area stores retained Corner Store branding held over from the Valero purchase of Ultramar Diamond Shamrock in 2001.
In Australia on 21 September 2011, customers could bring in their own cups (or container, regardless of size) and fill it full of Slurpee for only $2.60 (a portion of the price of a Super Slurpee) as long as it would fit through a cutout hole limiting the size. This did not stop people from receiving up to and above 5 liters of Slurpee for less than the price of a Super Slurpee. This event was known as Bring Your Own Cup Day.
Since 11 April 2015, Bring Your Own Cup Day in U.S locations originally occurred once annually; now semi-annually since 2016. Slurpee fans could come in and enjoy any size cup, that fit through the cutout hole, for only $1.49 the first 2 years. This promotion occurred again on 19–20 August 2016 in honor of the Slurpee's 50th anniversary. It returned on 19–20 May 2017, but the price was $1.50 plus tax, and returned once more on 18–19 August.
On November 7, 2015, 7-Eleven stores in the USA celebrated the giving season with Name Your Own Price Day for Small Slurpee drinks. Net proceeds from all Large Slurpee purchases were donated to Feeding America to support local food banks.
Since May 2018, as a result of the 7-Eleven - Sunoco LP agreement, existing Stripes Convenience Stores (now part of the 7-Eleven business portfolio) rebranded its Slush Monkey frozen beverage to the Slurpee brand. Since the rebranding, the 40 ounce Slurpee cup usually sold at 7-Eleven locations is absent from Stripes since the cup dispensers were designed for three sizes - S, M, and L.
- "7-Eleven Slurpee". Slurpee.com. Retrieved 2012-03-05.
- Liles, Allen. Oh Thank Heaven! The story of the Southland Corporation, 1977, p. 182
- Schuman, Michael. "Sushi Slurpee." Forbes 156.5 (1995): 12. Academic Search Premier. EBSCO. Web. 19 Oct. 2010.
- "Slurpee, Only at 7-Eleven - Slurpee Facts and 7-Eleven Fun". Slurpee.com. Retrieved 2012-03-05.
- "7-Eleven_Kosher_Slurpee Kosher Listing: STAR-K". Star-K Kosher Certification. Retrieved July 11, 2019 – via www.star-k.org.
- "Kosher Slurpee List". Chicago Rabbinical Council. June 21, 2019. Retrieved July 11, 2019.
- "The Cool History of the Slurpee". mentalfloss.com. November 15, 2010.
- "Slurpee Button Gallery - Slurpee buttons". sites.google.com. Retrieved 2018-07-30.
- "Environment: Pandas for Preservation". Time. 1974-08-12. ISSN 0040-781X. Retrieved 2018-07-29.
- Goldrich, Robert. "Brothers Quay offer upside-down perspective on Slurpee." SHOOT 36.26 (1995): 12. Film & Television Literature Index with Full Text. EBSCO. Web. 19 Oct. 2010.
- Thousand Oaks Deputies Recognize Good Citizenship by issuing youth 7-Eleven "Operation Chill" Coupons for Free Slurpees https://local.nixle.com/alert/5025239/?sub_id=120414
- "7-Eleven Becomes Kwik-E-Mart for 'Simpsons Movie' Promotion". Fox News. 2007-07-01. Retrieved 2007-07-03.
- "Nexon Slurpee Promo". Nexon.
- "Free Slurpees 2010". CoolBee.
- "Slurpees Australia".
- May, Daniel (2010). "Quench Your Thirst for LittleBigPlanet 2 Exclusives at 7-Eleven – PlayStation.Blog". PlayStation Blog. Archived from the original on 2020-07-15. Retrieved 2020-07-15.
- Sony Computer Entertainment Europe (2011-03-22). "7-Eleven® Slurpee® T-Shirt | LittleBigPlanet". littlebigplanet.playstation.com. Archived from the original on 2016-06-26. Retrieved 2020-07-15.