PORTOBELLO STEW

Ingredients

• 1 onion, coarsely chopped;
• 2 stalks celery stalks, chopped;
• 1 kg. coarsely chopped Portobello mushrooms, stems removed;
• 4 cloves of garlic, crushed;
• 2 carrots, coarsely chopped;
• 1 1/2 kg. potatoes, roughly chopped;
• 2 tbsp. fresh thyme leaves;
• 1 tbsp. chopped fresh rosemary;
• 3 cups of water or broth "Help for the liver" ;
• 1 tbsp. pure tomato puree (find one without additives);
• 2 tbsp. arrowroot starch plus 3 tbsp. cold water, for thickening (optional);
• A little chopped fresh parsley, for garnish.