Possible Clues:

• Coffee grounds and orange peels, typically
• Fail to use (profitably)
• Stuff to discard
• Not be economical
• Middle (reportedly) of desert
• It may be radioactive
• Compost heap detritus
• Is the saint in awe of extravagance?
• Misuse of crew as tempest revealed
• If a stew is made of this, it goes down the drain