I tried this:  it's decent, nothing special - Lynn

I just found this recipe:

 Sweet & Sour Tofu
 Serves   4

 1 cup pineapple juice
 1/4 cup soy sauce
 1/4 cup vinegar
 1/4 cup crushed tomatoes
 1 tablespoon arrowroot powder
 1 teaspoon ginger
 2 pounds firm tofu
 2 teaspoons sesame oil
 3 TBS vegetable broth
 2 green bell peppers, sliced in 2-inch strips
 1 carrot, thinly sliced
 1 20 oz. can canned pineapple chunks
 2 cups cooked brown rice

 Drain pineapple, reserving 1 cup of the juice, and set aside.  In
 a bowl, mix the pineapple juice, soy sauce, vinegar, tomatoes,
 arrowroot, and ginger.  Drain the tofu, pat dry, and slice into
 1-inch cubes. Heat oil & broth and saute tofu for 10 minutes.  Add
 peppers and carrots and saute for 3 more minutes.  Add sauce to
 the saute mixture and cook, stirring, until sauce thickens but
 carrots are still somewhat crisp, about 5 minutes.  Add pineapple
 chunks and heat through.  Serve over cooked brown rice.