Sauté the onions in butter until translucent. Add ginger, chicken broth and carrots.
Cook until the carrots are tender.
Cook the tuna, in any method desired, to rare.
Top the fish steak with carrot mixture.
Serving Suggestions: Garnish with chopped parsley or scallion.
Additional Comments: Can be served hot or cold. If you plan to serve it cold, the order in which things are done doesn't matter. If you are a curry fan a pinch of curry is nice added with the broth and carrots.