Big Red is a soft drink that was created by Grover C. Thomsen in Waco, Texas (1937). Originally, it was known as "Sun Tang Red Cream Soda." It is generally considered to be one of many American varieties of cream soda, and is the original "red cream soda". The name was changed to "Big Red" in the late 1950s by Harold Jansing, then president of the San Antonio bottling plant. Until the late seventies it was marketed exclusively in Central and South Texas and around Louisville, Kentucky.<1> The drink is highly popular in the Southern United States and is well known for its unique taste and red color. Its unique taste, though often thought to be strawberry or bubble gum, is created by mixing orange and lemon oils with the traditional vanilla used in other cream sodas. It is produced and distributed by Dr Pepper/Seven Up, Inc. under license from Big Red, Ltd., based in Waco, Texas. Several other red drinks have tried to gain market such as Mountain Dew's Code Red but have frequently failed to gain the same popularity as Big Red.
It may be a southern thing then, hmmm. It was real popular when I was growing up in the 1980s. It was ok, not my favorite soda.