The recipe is called "TUNA, BLACK-EYED PEA AND RADISH SALAD" is a terrific (and healthy) meal in itself. It can be found at the Bon Appetit/Gourmet site (epicurius.com).
One of the great things about that site is that you can do a food "search" based on a specific ingredient you may want to use up. Then you can indicate that you'd like the recipes that follow to be organized on a "top-rated" first basis. Consumers rate the recipes and suggest feedback and adjustments.
My wife and I both like capers and added some (2 tablespoons in our case) as one reader suggested.
Also, I found that after making the dressing, I only needed to use about 2/3rds of the oil/lime juice combo.
I just made it the other day and my wife and I both went nuts over it. We warmed up some potato bread hamburger-style roles purchased at the supermarket to go with it.
This is the kind of recipe you can make ahead and keep around for awhile. For us it sure is a nice change from regular tuna salad.