A dish fit for the gods

What is the meaning of Caesar's phrase "a dish fit for the gods"?

It means that the food was really, really good and out of this world.

It's a quotation from Shakespeare's Julius Caesar. When planning to assassinate Caesar, Brutus says:

"Let's carve him as a dish fit for the gods,
Not hew him as a carcass fit for hounds."

He's referring to the Roman custom of sacrificing animals to the gods and examining their entrails for omens; he means that they should kill Caesar in a reverent ceremonious way. So in the original it's not a very appetising remark! But many people just use the tag to mean "lavish delicious food".

See A dish fit for the gods - meaning and origin.