What does "God sends meat and devil sends cooks" mean?

What does the quote God sends meat and devil sends cooks by Thomas Deloney mean?

And if it doesn't have a specific meaning, in which situation can I use it?

Answers.com has a citation.

It is a common prouerbe, God may sende a man good meate, but the deuyll may sende an euyll coke to dystrue it.
[1542 A. Borde Dietary of Health xi.]

“It is a common proverb: God may send a man good meat, but the devil may send an evil cook to destroy it.”

Someone may have something good, and seek to do something good with it. But events conspire against him and he ends up with less than he started with. It has certainly been used in connection with financial investments.