Thai green curry paste

What you will need

• 6 green birds eye chillies
• 3 lemon grass sticks - touch leaves discarded
• 4 cloves garlic
• 1 1/2 tbsp galangal paste
• 2cm ginger
• 1 1/2 tsp salt
• 1/4 tsp ground black pepper
• 1 tsp lime zest
• 1 tsp cumin seeds
• 1/2 tsp turmeric
• 2 tbsp vegetable oil
• 2 tbsp water