For additional flavor try sautéing in:
- Soy sauce (Tamari)
- Vegetable broth
- Red or white wine (alcoholic or nonalcoholic)
- Sherry (alcoholic or nonalcoholic)
- Rice vinegar or balsamic vinegar
- Tomato juice
- Lemon or lime juice
- Mexican salsa
- Worcestershire sauce
- For even more taste, add herbs and spices, such as ginger root, dry mustard, and garlic.
https://www.drmcdougall.com/education/information/cooking-without-oil/