Can someone please direct me to a website (or book) that lists foods to
avoid?

I'm a pescatarian struggling to become a vegetarian and would like to know
what foods have hidden meat products in them. Like Gelatin or chips fried
in animal fat vs vegetable oil. Which chain restaurants use animal fat
instead of vegetable oil? Are there other "hidden" animal products used in
foods that the average person might not suspect? I've heard some Pizza
chains use beef products in their pizza sauce. I know Chi-Chi's Mexican
Restaurante uses a beef base in their rice, but their web site doesn't
mention anything about vegetarian safe foods.

Thanks for any info you can offer.

Robert