3 tuna fennel salad vinaigrette Recipes

sushi-grade tuna, olive oil, head frisee (about 10 oz), leaves separated, fennel bulb, stemmed and sliced (fronds reserved), blood oranges (or navel oranges), peel, pith and seeds removed, cut crosswise into 1/8-inch slices (juice reserved), seedless tangerines, peel and pith removed, cut crosswise into 1/8-inch slices (juice reserved), avocado , cut into 1/8-inch slices, extra-virgin olive oil, fresh lemon juice (preferably from meyer lemons), fresh blood orange juice (or fresh orange juice), fresh tangerine juice, champagne vinegar, shallot, minced, lemon zest, tangerine zest, sea salt, freshly ground black pepper

light canned tuna, drained, chopped fennel, granny smith apple, cored and chopped, mayonnaise, parsley vinaigrette, lemon juice, fennel seeds, ground coriander, lemon zest, sea salt, split hot dog rolls, boston lettuce leaves