Step 1

Cover the ginger with 2 T vinegar and set aside.

Step 2

Season chicken with 1 T fish sauce and sprinkle well with pepper. Stir in the lemon grass.

Step 3

Mix cornstarch, water, 1 T fish sauce and sugar together.

Step 4

Heat oil over medium high heat and fry the garlic until lightly colored. Add onion and stir briefly, then add chicken and scallions. Fry, stirring constantly, for about 5 minutes, then cover and cook over medium heat for about 5 minutes. Uncover and add the vinegar and ginger, and the cornstarch mixture. Stir well. Cover again and cook for about 5 minutes or until done.

Step 5

Serve with rice or rice noodles.