1. Heat the vegetable oil in a saucepan
and stir fry the ginger and garlic for 2 minutes, or until
lightly browned.
2. Add the hoisin sauce, vinegar, soy sauce, plum sauce, sugar,
and water, lower the heat, and mix well.
3. In a small cup, mix the arrowroot powder with a tablespoon
or two of water, until it forms a white liquid.
4. Add the arrowroot and sesame oil to the sauce, mix well,
and continue simmering on low heat 2 minutes, or until the
sauce thickens.
Serve over stir fried vegetables,
and sprinkle toasted sesame seeds on top.
