Mystery meat

Mystery meat is a disparaging term for meat products that have an unidentifiable source, typically ground or otherwise ultra-processed foods such as burger patties, chicken nuggets, Salisbury steaks, sausages and hot dogs.

Most often the term is used in reference to food served in institutional cafeterias, such as prison food or a North American school lunch.

[citation needed] The most common "mystery meat" products sold in the United States include Spam and sometimes sausages.

In 2016, Nissin, a Japanese food company that produces Cup Noodles, started to call their ingredients as self-deprecating Nazoniku (literally Mystery Meat) as part of their official marketing campaign.

Nazoniku, or formally known as Daisuminchi (literally Minced Meat Dice), are made from pork, soybeans and other ingredients.