There has been a lot of talk lately about getting food amounts accurate for brothers starting out in the catering business. I am posting some of the links I have personally found helpful. Feel free to add to the list. I really like the resources that convert recipes to your catering or party specifications.
http://allrecipes.com/
http://www.pastrywiz.com/conversion.htm
http://www.azbbqa.net/catering/
http://www.onlineconversion.com/cooking.htm
http://web.archive.org/web/20040701033910/http://pubs.caes.uga.edu/caespubs/pubcd/b1039-w.html#Worksheets
http://catering-services-directory.com/resources.aspx
http://bbq.about.com/
http://www.recipezaar.com/
http://allrecipes.com/
http://www.pastrywiz.com/conversion.htm
http://www.azbbqa.net/catering/
http://www.onlineconversion.com/cooking.htm
http://web.archive.org/web/20040701033910/http://pubs.caes.uga.edu/caespubs/pubcd/b1039-w.html#Worksheets
http://catering-services-directory.com/resources.aspx
http://bbq.about.com/
http://www.recipezaar.com/