Black Bean and Corn Tamales with Coriander and Tomato Salsa

Ingredients

• 2 cobs of corn, with husks
• 1 cup milk
• 1 cup water
• ½ cup instant polenta
• 20g butter
• 1 cup black beans, drained, rinsed
• ½ cup grated tasty cheese
• 1 lime, finely grated rind and 2 tbsp juice
• 1 bunch coriander, leaves removed
• olive oil cooking spray
• 1 cup chunky spicy tomato salsa