Peel the shrimp and remove the veins.
Season the shrimp with salt and black pepper, then coat them with potato starch.
Pour plenty of cooking oil into a pan and fry the shrimp until golden brown.
Leave a little oil in the pan and stir-fry minced garlic and minced ginger.
Add the sauce (ketchup, vinegar, sugar, soy sauce, chili oil, water) and bring to a boil.
Add the fried shrimp and chopped green onion, stir-fry quickly to mix with the sauce.
Transfer the finished Kkancho shrimp to a plate.