Whisk until no lumps remain. Pour the broth over the meat and stir well.Stir in ketchup, Worcestershire sauce, A1 sauce, and salt and pepper. stir well. Let it cook until most of the liquid has been absorbed, about 5 minutes.Tip: A1 sauce has a strong flavour. Start with 2 tablespoons of the sauce and increase to 4 tablespoons if you want the meat mixture to be bolder in flavour.Turn off the fire to the stove. Add the provolone slices to the top of the meat and let it melt.Serve the meat and cheese mixture on a sesame seed bun.Enjoy !
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