Alan Geisler

Alan Stark Geisler (September 30, 1930 – January 6, 2009) was an American food chemist, best known for creating the red onion sauce most often used as a condiment topping on hot dogs in New York City.^[1] Specifically, the sauce, which is marketed as Sabrett's Prepared Onions, is usually served on Sabrett brand hot dogs sold by New York's many pushcart hot dog vendors.^[1]

Sabrett brand hot dogs and the red onion sauce which Geisler created are the flagship products of Marathon Enterprises, Inc. The company is headquartered in Englewood, New Jersey.

^ ^a ^b Levin, Jay. "Alan Geisler, 78; food chemist, hot dog hero" Archived 2016-01-26 at the Wayback Machine, The Record (Bergen County), January 9, 2009, backed up by the Internet Archive as of December 26, 2016. Accessed October 9, 2018. "Alan Geisler of Mahwah, a food chemist who created the tangy red onion sauce that pushcart vendors slather over Sabrett hot dogs, died Tuesday at his winter home in Hernando, Fla. He was 78.... In 1960, Mr. Geisler -- a Tenafly High School graduate who received a bachelor's degree in food technology from the Massachusetts Institute of Technology -- founded a company that manufactures emulsifiers, shortenings and other ingredients for the baking industry.... Mr. Geisler, a 45-year resident of Mahwah, was still active in the company he founded a half-century ago, Technical Oil Products Inc. in Boonton, said Glenn Geisler, a partner."

[RecordObit-1] Levin, Jay. "Alan Geisler, 78; food chemist, hot dog hero" Archived 2016-01-26 at the Wayback Machine, The Record (Bergen County), January 9, 2009, backed up by the Internet Archive as of December 26, 2016. Accessed October 9, 2018. "Alan Geisler of Mahwah, a food chemist who created the tangy red onion sauce that pushcart vendors slather over Sabrett hot dogs, died Tuesday at his winter home in Hernando, Fla. He was 78.... In 1960, Mr. Geisler -- a Tenafly High School graduate who received a bachelor's degree in food technology from the Massachusetts Institute of Technology -- founded a company that manufactures emulsifiers, shortenings and other ingredients for the baking industry.... Mr. Geisler, a 45-year resident of Mahwah, was still active in the company he founded a half-century ago, Technical Oil Products Inc. in Boonton, said Glenn Geisler, a partner."

[1]