Recipe(tried): Tonight we had tuna steaks with

Hi friends;
This week our kroger store had yellow-fin tuna for $5.99 (usually $9.99) I
brushed it with a little melted butter, sprinkled on some lemon-pepper and
grilled them in the GFG. Served it with a big baked potato and a mixed green
salad. Delish. I suggest removing it from the grill when it is still just
slightly pink inside when you flake it.
We had never eaten fresh tuna until a few weeks ago when we tried it at a
restaurant. We are not fond of fishy fish. This yellow-fin does not taste or
smell fishy at all. It has a great taste and texture. What we had at the
restaurant was served with a creamy dill sauce, I am looking for a good recipe
for that if anyone has one, preferably without the addition of raw eggs.