My take on a classic Hawaiian dish...
1 Sashimi grade Ahi tuna steak (you can get these at Asian markets or at grocers like Earth Fare)
1/4 cup Shelled pistachios (cashews also work well)
1 Tsp Sesame oil
2 Tbsp Wheat-free tamari
1/4 cup Finely chopped yellow onion
Cut the tuna steak into small cubes approximately the size of a nickel. Set aside in a mixing bowl. Pour the pistachios into a plastic bag and crush into smaller pieces with the blunt end of a meat tenderizer, then add these to the bowl, Peel the avocado, remove the pit, and slice into cubes a little smaller than the tuna. Peel and core the cucumber, then slice into tiny cubes. Add these to the bowl, mixing in sesame oil and wheat-free tamari. Stir until well blended.