Preheat a grill or grill pan to high.
Put cubed tuna in a mixing bowl with olive oil, salt and pepper. Toss to incorporate the seasoning. Skewer the tuna through the center half way down the skewer. Season again with salt and pepper. Sear on a very hot grill for 10 seconds on all sides. Cool and serve at room temperature.
Professional Recipe: This recipe was provided by a chef, restaurant or culinary professional and makes a large quantity. The Food Network Kitchens chefs have not tested this recipe in the proportions indicated and therefore cannot make any representation as to the results.
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