Mongolian Lamb - cooking recipe

Ingredients

500 g lamb tenderloin
2 teaspoons sugar
2 tablespoons dark soy sauce
1 small egg, beaten
1/2 teaspoon bicarbonate of soda (baking soda)
2 teaspoons cornflour (cornstarch)
5 tablespoons peanut oil
3 small onions, cut into quarters
1 spring onion, finely sliced (scallion)
2 large garlic cloves, finely chopped
Sauce
1/2 teaspoon five-spice powder
1 tablespoon hoisin sauce
1 tablespoon ground bean sauce (mor sze jeung)
1 teaspoon chili bean sauce
1 tablespoon Chinese wine (or dry sherry)

Preparation

Partially freeze lamb so it's easier to cut and then slice paper thin.
Soak lamb in cold water for 30 minutes.
Rinse well under cold running water, drain and squeeze out excess moisture.
Mix salt, soy sauce, egg, bicarbonate of soda (baking soda) and cornflour (cornstarch) in a medium bowl.
Add lamb to the bowl and mix well. Add one tablespoon of peanut oil, mix again, and leave to marinate in refrigerator for two hours.
Heat one tablespoon of peanut oil in a wok over medium-high heat and stir fry onion wedges and spring onion (scallion) for one minute. Remove and place aside.
Heat remaining three tablespoons of peanut oil in the wok swirling to cover the surface.
Stir fry garlic for 5 seconds.
Add lamb and stir fry over high heat tossing constantly until brown.
Add all sauce ingredients except the wine and toss a couple of times.
Return onion and spring onion to the wok. Pour wine around the outside of the wok so it sizzles, mix and serve at once over rice.