Okay, Spaw. Here we go.

During my first time in graduate school, I wanted to make a dish my mother made and I loved: creamed tuna on mashed potatoes (yeah, yeah, I know,I know).

So I bought a can of tuna and made the mashed potatoes. I successfully made a roux of warm milk and flour, used sauteed onions, and added the can of tuna.

Well, heck, nobody TOLD me that it would have been better to drain off the oil in which it was packed first....