Asian Tuna Tartare Avocado Bowls. Diced sushi grade ahi tuna marinated briefly in soy sauce, rice vinegar, toasted sesame oil, honey, ginger, sriracha and scallions, then stuffed into halved avocados, sprinkled with black sesame seeds and served with pickled ginger and wasabi mayo. These tuna tartare avocado bowls are a...