I just canned some tuna for the first time ever last week.
Some of the spice combinations I used are:
Thyme
Hot curry mix
Roasted Jalapino with cilantro and tomatillo
Hot roasted plum sauce
capers and sundried tomatoes
minced garlic
I put them in the bottom of the jars so I can tell which is which. I
just tried the thymed fish a few days ago. There was a lot of thyme
in it, but the flavor was subtle.
~Tony