French Onion Soup Canning Recipe

Ingredients

• 5 pounds yellow onions (peeled and thinly sliced)
• 4 tablespoons unsalted butter
• 2 tablespoons olive oil
• 8 cups beef broth (preferably low-sodium and homemade)
• 2 cups dry white wine (such as Sauvignon Blanc)
• 2 teaspoons sea salt (or to taste)
• 1 teaspoon freshly ground black pepper
• 2 teaspoons dried thyme (or 1 tablespoon fresh thyme leaves)
• 2 bay leaves
• 1 tablespoon Worcestershire sauce
• 2 tablespoons sherry (optional but enhances depth)
• 1 tablespoon sugar (to aid caramelization)
• 1 tablespoon apple cider vinegar (brightens flavor)
• 1 tablespoon minced garlic (about 3 cloves)