Looking for a new way to eat tuna without bread? Try putting the tuna in endive cups.
I used to put tuna in lettuce cups kind of like the PF Chang's chicken lettuce wraps, but in the spirit of creativity, I tried putting the tuna in some Belgian endive leaves. As well, you can make smaller and narrower bites than with the bigger lettuce leaves.
For my tuna, I use a can of tuna and throw in some chopped red onions, a 1/2 Tbs of sweet relish, a dash of garlic salt, and a heaping Tbs of organic mayo. I can't eat tuna without some mayo. A little bit of mayo won't put a huge dent in the calorie bank.
As a topper, I threw some tomato on top. Dee-lish and lower carb.