Cauliflower is very happy in a pungent marinade, so I added it to one of my favorite stand-bys, tuna and bean salad. I liked this salad even more with the cauliflower added, as the tuna flavor infuses the cauliflower along with the vinegar and olive oil. You can use canned white beans, or cook up some delicious giant white beans and some of their broth in the dressing. The salad tastes even better if it has a few hours or a day to sit, and it keeps well.
Place sliced onion, if using, in a bowl and cover with cold water. Soak 5 minutes. Drain, rinse and drain again on paper towels.
03Meanwhile in a small bowl or measuring cup, whisk together vinegar, lemon juice, salt, garlic, mustard and yogurt or bean broth. Whisk in olive oil.
04When cauliflower is tender remove from heat and toss with half the dressing in a large salad bowl. Drain tuna and add to bowl with cauliflower. Break up with a fork. Add cooked beans, onion and herbs. Toss together. Add remaining salad dressing and pepper, taste and adjust seasoning.