What is the red sauce on hot dogs?

at a outside mall I ordered a hot dog with red sauce on it i dont know what the sauce was called or what was in it can anyone help me find a recipe for it
Update: Ok I live in the us i think if i was eating a hotdog with catsup on it i would know it was catsup. do u really think anyone is that stupid if so look in the mirror. and yes i am blonde so quit bein jealous just cuz i can get a date and u have nothin else to do tonight
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