Add 4 to 6 cups peanut oil to a wok or skillet. Heat to 375°F.
Add 1/2 shrimp. Cook for 30 seconds. Remove with a slotted spoon toto a paper towel-covered plate to drain.
Repeat with remaining shrimp.
Leave wok over lowered heat and keep warm.
Heat a small skillet or wok over high heat.
Add 3 tablespoons peanut oil.
Add bamboo shoots, chile pepper, ginger and scallion whites. Cook, stirring for 20 seconds.
Add prepared sauce mixture. Bring to a boil.
Add stock. Bring back to a boil.
Add cornstarch and water mixture (Be sure to give the cornstarch and water a quick stir to recombine before adding).
When sauce is hot and clear and has a slight glaze, remove pan from the heat.
Reheat shrimp frying oil to 375°F.
Add back all the shrimp. Fry briefly and remove to another paper towel-covered plate to drain.
When well-drained, add shrimp to sauce and toss to glaze the shrimp.
Add in cilantro leaves.
Sprinkle with sesame oil.
Serve over plain rice.