<Tr> <Th> Related products </Th> <Td> Teem, Slice </Td> </Tr> <Tr> <Th> Website </Th> <Td> (1) </Td> </Tr> <P> Sierra Mist is a lemon - lime flavored soft drink line . Originally introduced by PepsiCo in 1999, it was eventually made available in all United States markets by 2003 . The drink was rebranded as Mist Twst in 2016, although it was observed to be reverting back to Sierra Mist in 2018 . The brand is aimed at competing with The Coca - Cola Company's Sprite brand and Dr Pepper Snapple Group's 7 Up . </P> <P> PepsiCo began test - marketing potential lemon - lime sodas in 1998, introducing a formulation known as Storm that never made it past the test - marketing stage . Prior lemon - lime sodas from PepsiCo included Teem, which had been introduced in 1960 but discontinued in 1984, when they introduced the Slice line of fruit - flavored sodas, which launched with a lemon - lime flavor . The company introduced Sierra Mist in 1999 . The selection of the name "Sierra Mist" was based on favorable market research involving 2,000 people from over 1,000 possible names . "Sierra" had previously been a proposed name for what became the original (10% juice - formula, lemon - lime) Slice in 1984 . Diet Sierra Mist was also introduced in 2000, and sales of both diet and original Sierra Mist totaled $100 million in its first year of production . Many PepsiCo bottlers continued to bottle 7 Up until existing agreements with Cadbury Schweppes expired in January 2003, at which point its distribution was expanded nationwide in the U.S. In 2004 the beverage had surpassed 7 Up on the basis of annual retail sales, placing it as the 2nd most - purchased lemon - lime soft drink in the U.S. (Sprite being the 1st). </P>

Is mist twist and sierra mist the same