"This is a mainstay in my house, something you can always throw together for an easy light meal The authentic version would call for tuna packed in olive oil, but I actually prefer water-packed tuna The salad packs a lot of protein, not just from the beans, but also from the tuna, which is also an excellent source of Omega-3 fatty acids...."
INGREDIENTS
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1 small or 1/2 medium red onion, peeled and very thinly sliced
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1 tablespoon plus 1 teaspoon red wine vinegar or sherry vinegar
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1 (6 1/2-ounce) can water-packed tuna, drained
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1 (15-ounce) can cannellini beans or borlotti beans, drained through a strainer and rinsed
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3 fresh sage leaves, slivered
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2 tablespoons finely chopped flat-leaf parsley
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Salt and freshly ground pepper
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1 small or medium garlic clove, finely minced
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1/2 teaspoon Dijon mustard
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3 tablespoons extra virgin olive oil
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1 tablespoon plain low-fat or nonfat yogurt (or omit and use 4 tablespoons olive oil)
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1/2 Japanese cucumber, cut in half lengthwise and sliced, for garnish