Creamy cauliflower pottage

Ingredients

• 1 cauliflower, chopped into florets
• ½ onion, chopped into rings
• 2 garlic cloves, minced
• 1 tbsp olive oil
• a pinch of salt
• a pinch of black pepper
• ¾ cup raw cashews
• 1 ½ cup beans
• 4 cups vegetable broth
• 1 cup water
• ¼ tsp ground nutmeg
• 1 tbsp lemon juice