Sweet and Sour Pork

for pork

• 280 grams pork shoulder (cut into ¾-inch pieces)
• 1 teaspoon soy sauce
• 1 teaspoon oyster sauce
• 1 teaspoon Shaoxing wine
• ½ teaspoon ginger juice (squeezed from grated ginger)

for sauce

• ⅓ cup water
• ¼ cup rice vinegar
• ¼ cup ketchup
• 3 tablespoons granulated sugar
• 1 ½ teaspoons Potato Starch
• ¼ teaspoon salt

for vegetables

• 50 grams green bell pepper (~½ pepper, cut into squares)
• 125 grams fresh pineapple (~¼ pineapple, cut into cubes)
• 50 grams onion (~¼ onion, cut into squares)
• 50 grams carrot (~½ carrot, sliced)

for batter

• 43 grams all-purpose flour (~⅓ US cup)
• 20 grams Potato Starch (~2 tablespoons)
• 2.3 grams baking powder (~½ teaspoon)
• 1 large egg
• water (cold)