Doritos Inventor To Be Buried With His Famous Chips

Arch West -- the 97-year-old ex-Frito-Lay legend -- died last week, and his daughter announced the family plans on "tossing Doritos chips in before they put the dirt over the urn" when he is buried.

TMZ spoke with West's son-in-law ... who tells us the family will use Original, Cool Ranch and Nacho flavored Doritos, since those were West's favorite. He was NOT a fan of the Cheeseburger flavor, so those will not be used.

According to his daughter, West came up with the idea for Doritos during a family vacation to San Diego ... when he discovered a snack shack selling fried tortilla chips in 1961.