Add pasta, cheese and parsley to tuna sauce and toss to mix and coat.

Others, more inventive, include pollo tonnato, prepared like the Italian dish of veal in tuna sauce.

Spread just enough of the tuna sauce over the bottom of a nonreactive loaf pan to cover.

Top with a layer of veal and cover with a thin layer of tuna sauce.

A classic in this category is vitello tonnato, or veal with tuna sauce.

There is a fine vitello tonnato, the slices of roast veal in a smooth tuna sauce.

Smear bottom of a large serving platter with some of the remaining tuna sauce.

This classic pairs cold veal with a creamy tuna sauce, in a dish as irresistible as it is unlikely.

But the attraction faded the day I set out to cook vitello tonnato, or veal in tuna sauce.

And a piece of cooked tuna is dressed with tuna sauce.