Pretzels were a type of salty food. To combat his low sodium levels, Rex Matheson ordered some pretzels. (TV: Rendition)
In 2009, when Patricia Haggard, her partner, and Giles from P.R.O.B.E. went to a branch of Wawa in Philadelphia with Brittany Mordley, they purchased ice teas and pretzels, which Brittany paid for using an ability she got after she was partially converted by Cyberon. (PROSE: Silver-Tongued Liars)