Adam Liaw’s Thai-style pepper and garlic chicken stir-fry recipe

Ingredients

• 1 tsp white peppercorns
• 12 garlic cloves
• ¼ tsp salt
• 400g chicken thigh fillets, cut into 3mm-thick slices
• ¼ tsp baking soda
• 2 tbsp vegetable oil
• 1 tbsp oyster sauce
• 1 tbsp soy sauce
• ½ tsp sugar
• 1 small Lebanese cucumber, peeled at intervals and sliced, to serve
• a few sprigs of coriander, to serve