Just so that Craig Browing doesn't think it's just him, the entire second half of this post decided to poof. I will try it again.
For those of you without any known food allergies, it may be hard to understand that the word "moderation" is not an option. I will use prunes as an example because everyone can relate as to why moderation is stressed when consuming this food.
Plums are not known as a common food allergy food, nor are their dried form, prunes. In the commercial processing of plums to prunes, they sometimes add sulfites. Now sulfites are one of those more common allergy additives that can result in death, so eating one prune with sulfites can result in death depending on the level of reaction to the amount of consumed sulfites.
Here's your sulfite allergy link:
http://www.webmd.com/allergies/guide/su ... ensitivity. The list of foods on this article contains the words: dried fruit. Hence my decision to use a prune as an example.
Now take a commercially produced product that contains multiple proven allergic items such as a jar of cheap Chinese duck sauce. You might have prunes used instead of fresh plums, soy and a countless number of preservatives or additives with allergic properties. Instant death in a jar for some. Delicious condiment for others.