Clean the shrimp thoroughly and pat dry.
Season the shrimp with salt and black pepper, then coat with starch.
Heat plenty of oil in a pan and fry the shrimp until golden brown.
In a separate pan, sauté minced garlic and green onion.
Add chili sauce, ketchup, sugar, vinegar, and water, then bring to a boil.
Mix the fried shrimp into the sauce.
Plate and garnish with green onion and sesame seeds.