Shrimp with Snow Peas

2/3 lb. tiger prawns
Marinade for shrimp:
1 1/2 tsp. sherry
1/2 tsp. salt
1/2 tsp. grated ginger
1 1/2 tsp. cornstarch
1 tsp. water

1 Tb. chicken broth
3 Tb. water
1/2 tsp. cornstarch
3 Tb. oyster sauce (very important)
1 Tb. hoisin sauce
also needed:
1/2 cup vegetable oil
1 clove garlic, pressed or minced
1/4 tsp. salt
1/2 lb. snow peas

Shell and devein prawns. Rinse and pat dry with a paper towel. Combine
marinade in medium bowl. Add prawns and mix well. Let stand 30 mins.
Heat wok over medium heat, add oil, and stir fry garlic for 15 secs. Add
prawns and stir fry until pink. Remove from wok, and place on plate.
Add salt and snow peas to oil in wok. Stir fry 30 secs. Add seasoning
sauce and stir slightly until think and bubbly. Add cooked prawns. Stir
to coat everything with sauce. Serve hot with cooked rice.