From what I have read, IR burners generate intense heat that is used to put a char or crust on the surface of whatever protein, or to cook thin proteins quickly to avoid drying out.
Not really.
Infrared burners generate intense radiation. Which is different than temp/heat.
The idea here (a fine one imo) is cooking via radiation rather than convection. Not just getting higher temps.
Gassers cook mostly by convection (i.e. a flow of hot air). That's not the perfect grilling method for a steak. Charcoal, in contrast, cooks mostly by radiation.
Because radiation is a great grilling method, high end gas grills often add an IR burner. Joe's gizmo is a clever way to add IR capability to a mostly convection Weber Genesis.
Note that the Weber sear station burners just add more heat via more convection. The sear burner is just another gas tube -- it isn't an IR burner (which is what the fancy grills have).
Here's a pretty good explanation of how convection, radiation and induction differ.
Learn about thermodynamics: the basis of all cooking! Find out how heat transference works by conduction, convection, radiation, induction, and infrared heat in your grill, bbq, and smoker.
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