BTW I'm pretty certain that is a bottle of lemon dressing rather than lemon juice.
That's exactly what it is chriswg, and I wouldn't even add that! And I think people are taking his demo too literally. I doubt very much that he cooks this way for real. It will be the usual warmed base, G/G into hot oil etc.
Also this guy is doing kebabs, pizzas, and god knows what else too. Jack of all trades...master of none!