Sunday Brisket with Onions - National Onion Association

Ingredients

• 1 (4-pound) beef brisket
• Kosher salt and freshly ground black pepper
• 2 tablespoons olive oil
• 3 pounds yellow onions, thinly sliced
• 1 bay leaf
• 1 tablespoon apple cider vinegar
• 1 tablespoon Dijon mustard
• 1 (12-ounce) bottle or can of beer