Well, the simplest answer is...there isn't one, unfortunately. Some swear by BML, some swear by HPW and lots don't feed either. The dry food-absolutely not necessary. There are exceptions but they should not have a reason to wake up during the day and eat. With my 6, I've never seen one out during the day eating in almost 3 years. Here are some links:
Scroll down a bit for descriptions of different diets:
http://www.suzsugargliders.com/feedingyourglider.htm
A good recent thread on diet:
http://www.sugarglider.com/glidergossip/topic.asp?TOPIC_ID=24924
Pellets:
http://www.sugarglider.com/glidergossip/topic.asp?TOPIC_ID=24413