Cauliflower and Potato Soup

Ingredients

• 1 tbsp unsalted butter
• 1 medium brown onion, finely diced
• 2 cloves garlic, minced
• 1 cauliflower, cut into florets
• 400 g potatoes, peeled and diced
• 750 mL vegetable stock
• Salt, to taste
• Freshly ground black pepper, to taste
• 250 mL milk
• Pinch of nutmeg