For the tuna:

*  Shichimi is a Japanese-style seasoning blend available in the ethnic or Asian food aisle at your local grocer.

Heat oil in a heavy skillet over medium high heat.  Season tuna with shichimi.  Sear tuna to desired temperature.  Remove to platter and keep warm.  Add garlic and ginger to same pan and sauté 30 seconds.  Add tomato paste and cook 30 more seconds.  Stir in hoisin sauce and orange juice.  Reduce heat to low and simmer 5 minutes, or until sauce-like consistency.  Stir in reserved orange zest.

For the rice:

*  For a more authentic sticky rice flavor, try preparing with Carolina®, Water Maid®, or River® Medium Grain Rice.

Heat oil in a medium saucepan over medium heat.  Add garlic and sauté 30 seconds.  Add rice and stir to coat with oil.  Add sake and simmer, stirring occasionally, until liquid is absorbed, about 3-5 minutes.  Stir in water and salt.  Cover and simmer 20 minutes or until rice is tender.  Fold in green onions and water chestnuts.