Guinness is definitely NOT a black tinted water, more like mud. I was only able to drink it when I was trying miracle fruit patties. By the way I recommend that experience 👍
As for your fast food I'd probably hate it. If it is not charred on the outside it means it is not cooked 😉
I do very minimal thermal treatment. Its not for everyone but you can always keep it on 1 minute longer. I mean you can keep it for longer and cook it all through, I just dont like that.