Cag, I haven't as yet powdered eggs, it is on my To Do list but wanted to share the information that I found. However, here is what Honeyville has to say on reconstitution:
"To reconstitute one egg, mix 1 Tablespoon of powdered whole egg with 2 Tablespoons of water. Use for any recipe that calls for eggs. When using with other dry ingredients, it is not necessary to reconstitute egg. Simply add to other dry ingredients and increase water measurements in mixture to necessary amount."
Perhaps someone can try this to see how it works and report back...I'm in the process of moving my herb gardens to another area and won't be able to get to this for some time.
Moggy