Sous Vide Pulled Beef Burgers

Ingredients

• 10 ounces (300g) brisket
• 2 carrots, roughly chopped
• 1 white onion, roughly chopped
• 1 stalk celery, roughly chopped
• 4 sprigs thyme
• 1 tablespoon unsalted butter or extra virgin olive oil
• 2 cloves garlic, peeled
• 1 bay leaf
• Salt and freshly ground black pepper
• 2 hamburger buns
• 4 slices red onion
• 4 slices cucumber
• 2 slices tomato
• 2 tablespoons BBQ sauce