How many different places have you had a portobello burger at? When done right (marinated and cooked thoroughly with a little char) they are delicious. But a LO

How many different places have you had a portobello burger at? When done right (marinated and cooked thoroughly with a little char) they are delicious. But a LOT of places just throw a raw portobello on the grill and give you something rubbery and bland. You bite it and the entire thing tries to slide out of the bun, it tastes like nothing, and has the texture of gristle. I stopped ordering them unless I’m somewhere very classy, because there’s a 50% of the cook screwing it up. Same for eggplant sandwiches. One too many slabs of raw eggplant. There’s also no protein to speak of in a portobello. Half a gram, versus 20 grams in an impossible burger.