Black Pepper Mushrooms with Rice

Ingredients

• 375 g button mushrooms
• 2 tbsp olive oil
• 1 small red onion
• 3 medium garlic cloves
• 1 red long chilli
• 3 sprigs fresh curry leaves (1 handful leaves)
• 1 tbsp freshly ground black peppercorns
• 1 tbsp shiro miso paste
• 1 tbsp oyster sauce
• 1 tbsp kecap manis
• 1 tbsp light soy sauce
• 50 g unsalted butter
• ½ cup vegetable stock
• Steamed rice