it took a long time for me to try any of it. I wanted to be sure to find a company that didn't cross contaminate. I use Davinci pasta http://www.davincipasta.com/ for testing wheat. She just eats it with land o lakes butter and salt. I trial it one tiny bite at a time over 6-8 weeks. That's what the gastro dr rec. and then I also found that not stopping an item is good too. I stopped peanut butter once and then she reacted to it. Not sure why but haven't been brave enough to try it again.