Beef Wellington Sandwich

Ingredients

• 2 lbs. Beef Tenderloin (for four people)
• or
• marbled beef ribs
• Cuso's Grass Seasoning
• 2 Garlic whole heads, halved
• 2 sticks celery, chopped
• 2 carrots, chopped
• 1 Heaping tbsp of beef soup base
• 2-3 tbsp Worcestershire sauce
• 2 Sprigs of fresh thyme
• 2 cups Beef bone broth
• 1 ½ cups red wine
• Butter
• 2 cups cremini (baby bell) mushrooms, chopped
• 2 Shallots, chopped
• 1 tbsp flour
• Salt
• Pepper
• Whole grain mustard
• 1 Large loaf of French Bread, Quartered and sliced
• Four slices pancetta
• Fresh parsley