I tasted CHORIZO once and really liked it. Was going to buy it but didn't. Know why?

I read the ingredients list as I always do and it includes SALIVARY GLANDS.

Well the chorizo I tasted was in burrito that a co-worker's mother made for him for lunch. I thought it was really scrumptious but of course there was no ingredients list to read.

I can't knowingly eat salivary glands. Do you? Why would they be put in any food? Anyone?