Classic Demi Glace Recipe: Elevate Your Sauces with Richness

Ingredients

• 4 lbs beef bones (preferably marrow bones)
• 1 medium onion, quartered
• 2 carrots, chopped
• 2 celery stalks, chopped
• 1 head of garlic, halved horizontally
• 2 bay leaves
• 4 sprigs fresh thyme
• 10-12 cups cold water (enough to cover bones)
• 1 cup dry red wine (e.g., Cabernet Sauvignon or Merlot)
• 2 cups prepared beef stock (from the previous step)