Slow Smoke Gold BBQ Sauce was created to be our competition slather – the indispensable coating of flavour applied to raw meat before the House of Q House Rub is shaken on. This gold mustard sauce is incredibly tasty and has quickly become a fan favourite. Slow Smoke Gold BBQ Sauce is a mustard-based BBQ sauce that is at first zingy and tangy from the mustard and vinegar, and then provides a hint of heat with pepper and cayenne notes.