In a small bowl, stir together chicken stock, soy sauce, sesame oil, sambal olek, salt, Splenda and xanthan gum. Set aside.
Heat a 12-inch skillet and once it is hot, add in oil. To the hot oil, add ginger and garlic and stir to flavor the oil. Quickly add in asparagus and stir. Cover the skillet with a lid and cook for 1 minute.
Remove the lid. If you have any fond at the bottom of the skillet, use about ¼ cup of water and deglaze the bottom of the pan.
Add the mushrooms and stir to coat with the oil.
Pour in the sauce, stir quickly, and cover immediately.
Allow the vegetables to cook for 2 minutes. Then, sprinkle with sesame seeds, and serve.