Stir-fried kidneys

Ingredients

• 400 g pork kidneys
• 1 cucumber
• 3 scallions
• 2 slices ginger
• 2 cloves garlic
• 2 tbsp Shaoxing wine
• 2 tbsp light soy sauce
• 1 tbsp dark soy sauce
• 1 tsp sugar
• 1 tsp vinegar
• 1 tbsp cornstarch (slurry)
• 2 tbsp vegetable oil
• 1 tsp sesame oil