Crème de champignons – Cora Déjeuners et dîners

Ingredients

• 2 tablespoons (30 ml) vegetable oil
• 1 ½ cups (375 ml) Spanish onions, coarsely chopped
• ¾ cup (180 ml) celery, coarsely chopped
• ½ cup (125 ml) all-purpose flour
• 8 cups (2 L) chicken broth
• 1 cup (250 ml) potatoes, coarsely chopped
• 2 ¾ (680 ml) cups sliced mushrooms
• A pinch of pepper
• 2 cups (500 ml) of 2% milk