SLICED SEARED AHI (Yellowfin tuna) with Sweet Onion Sauce     
Cut tuna into 2" steaks about 3x4 inches. Brush with oil and sear in non stick pan for 3 minutes a side on medium/high heat be sure to leave raw in the center. Pan sear tuna leaving a considerable portion raw in the center. Slice into ½ inch strips and immerse in the onion sauce for at least a half an hour. Serve cold as an appetizer.

Onion sauce

1 cup sliced onion (Peel and slice one large sweet vidalia onion- dice into 1" strips
16 ounces of light soy sauce.
1 tbsp of celery seeds.
½ Cup A-1 sauce
1 tsp hot sauce
1/4 cup rice vinegar
1 tsp corn syrup