Does anyone know a recipe for au jus for a California Pastrami Sandwich?

Been looking EVERYWHERE with no luck. I am looking for the Au Jus that places like The Hat uses to heat thier pastrami in. Is it regular beef au jus? Or a special blend?

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).