In a medium bowl, combine the softened cream cheese, crab meat, green onions, garlic, soy sauce, Worcestershire sauce, sugar, and sesame oil. Mix until smooth and evenly blended.
8 oz (226 g) cream cheese, 8 oz (226 g) refrigerated pasteurized crab meat, 2 green onions (green parts), 1 clove garlic, 1 tsp (5 ml) low sodium soy sauce, 1 tsp (5 ml) Worcestershire sauce, 1 tsp (4 g) granulated sugar, 1 tsp (5 ml) sesame oil
Place the wonton wrappers on a work surface and keep them covered with a clean, slightly damp towel to prevent drying out. Add a small spoonful of filling to the center of each wrapper, keeping the edges clear.
24 (150g) square wonton wrappers
Brush the edges of the wrapper lightly with the egg wash. Lift two opposite corners up over the filling and pinch them together, then bring the remaining two corners up to meet in the center and pinch all four corners together to form a sealed pyramid. Pinch along each seam to make sure there are no gaps.
1 large egg
Heat the oil in a large, heavy pot over medium heat until it reaches 350°F (177°C). Fry the crab rangoon in small batches until the wrappers are golden and crisp. Remove with a slotted spoon and transfer to a rack or paper towels to drain excess oil.
4 cups (960 ml) neutral oil
To make the dipping sauce, whisk together the rice vinegar, water, sugar, ketchup, soy sauce, and red pepper flakes in a small saucepan. Bring to a simmer over medium heat.
¼ cup (60 ml) rice vinegar, ¼ cup (60 ml) water, 3 tbsps (38 g) granulated sugar, 1 tbsp (15 g) ketchup, 2 tsps (10 ml) low sodium soy sauce, ½ tsp (1 g) red pepper flakes
In a small bowl, stir the cornstarch with the cold water to form a smooth slurry. Whisk the slurry into the simmering sauce and cook, stirring constantly, until thickened. Remove from the heat and let cool slightly before serving.
2 tsps (6 g) cornstarch, 2 tsps (10 ml) cold water
Serve the crab rangoon hot with the sweet and spicy dipping sauce on the side.