INGREDIENTS
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1 (12 ounce) can solid white tuna packed in water, drained
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1 tablespoon mayonnaise
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3 green onions, thinly sliced, plus additional for garnish
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1/2 red bell pepper, chopped
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1 dash balsamic vinegar
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black pepper to taste
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1 pinch garlic salt, or to taste
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2 ripe avocados, halved and pitted