Ah, let us consider this question
scientifically. The quick, coy answer would be '
hot,' and expanded therefrom to the observation that stars burn so hotly that (unless you were
a weird star-inhabiting lifeform), you'd be incinerated before one ever got near enough to tickle your
taste buds. But what if we were to take a bite-sized piece of a star and put it someplace cold (like a remote corner of outer space), and there allow it to cool down to about
room temperature? Well, though the star would then be tastable, the taste would depend -- on which star, when in its life cycle the morsel was taken, and even what part of such star. From the surface or from deep within? From a whispy
tendril extending spaceward, or from the center of a
sunspot blackening the churning surface?
If we were to look to the average bite of star stuff, it would be the material from which most stars are composed for most of their existence:
hydrogen. The
gravity-ignited burning of hydrogen is what lends to most of the
starlight experienced in our night skies. But that makes our inquiry problematic, for hydrogen is odorless and
tasteless. And, perhaps more problematic even, hydrogen is not exactly in an edible form at room temperature. Flammable, yes, edible, no. Don't get us wrong here, we love hydrogen -- in fact, we think it's a
gas!! But an odorless, tasteless gas doesn't exactly make for a delightful
comestible-- no matter how combustible. Now, hydrogen might be helped by adding a few other elements commonly found in stars.
Helium may leave you lightheaded.
Carbon,
Oxygen,
Nitrogen -- hey, now you've got all the building blocks of the
amino acids of which life itself is made (and so, the source of virtually everything we eat).
In fact, you could throw in other elements commonly found in stars, and you would literally have every
element found in all the food we eat, because the stars themselves are foundries of matter, taking their stores of Hydrogen and crunching them first into Helium, and then progressively into everything else, up to the heavy ones -- this is the source of all elements except a few crazy heavy ones which have only ever been made by scientists in a lab, for a few fleeting seconds. So now we've gone from no taste at all to pretty much 'every combination of matter in our Universe.' But, no, there is no logical probability that one bite of a star would taste like
cherry chocolate chunk, while the next would be
butterscotch rum, and the next still,
artichoke quesadilla. In all likelihood, taking the average of the composition of stars, it'd be mostly that hydrogenic absence-of-taste, with just some slight effervescent metallic neon notes wafting about in the background.
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It has been suggested to me that we might ask a black hole.... or Galactus (who generally eats planets, but theoretically could probably eat a star).