Simple Mushroom Potato Soup with Tuna | fitfoodwizard.com

Ingredients

• 500 g (17.6 oz) champignons
• 1 onion
• 2 medium-sized potatoes
• 2 cloves of garlic
• 2 L (8 cups) chicken stock (or water)
• 1 tsp salt
• 1/4 tsp ground black pepper
• 1 Tbsp butter
• 150 g (5.3 oz) tuna in its own juice (optional)
• 4 Tbsp Greek yogurt (for thickening after cooking - optional)