I do not recall seeing you at my old school Faith, but the same thing was said about several of the meals served there too.

'Mystery meat' seems to be a popular choice for many a school dinner menu.
As for the substance Terro describes as being eaten by Angels, the dictionary has this to say:
MANA - 1. A supernatural force believed to dwell in a person or sacred object.
MANA - 2. Power; authority.
This online page says tons of stuff, but nothing about Angels.
http://www.answers.com/topic/manaHowever MANNA brings up
MANNA - 1. manna from heaven - (Old Testament) food that God gave the Israelites during the Exodus.
MANNA - 2. Spiritual nourishment of divine origin. Which can be utilised by all who hunger spiritually.
MANNA - 3. A sweet granular substance excreted on the leaves of plants by certain insects, especially aphids, and often harvested by ants.
This online page particularly has a lot of interesting information on it.
At least I found it very interesting. I hope some of you find it interesting too.
http://www.answers.com/topic/manna?cat=technologyEnjoy.