Burgundy-Mushroom Gravy Recipe from France

Ingredients

• 4 tbsp of butter
• 1 lb (454 g) of fresh mushrooms , cleaned, trimmed, and thinly sliced
• 1 large onion , finely chopped
• 1 cup of burgundy wine (or other red wine )
• 4 tbsp of flour
• 10 oz (283 g) of canned chicken broth
• 1 cup of water (more as needed)
• 0.5 tbsp of dried garlic flakes