Lemongrass and chilli tempeh with snow peas

Ingredients

• 1 lemongrass stalk
• 2 tablespoon rice bran or peanut oil
• 200 gram tempeh, cut into 1 cm wide strips
• 1 small onion, thinly sliced
• 1 clove garlic, crushed
• 1 1/2 tablespoon brown sugar
• 1/2 teaspoon chilli powder
• 300 gram snow peas
• 2 kaffir lime leaves, finely shredded
• 1/2 lemon, juiced
• steamed rice, to serve