It's very sour. Humans can eat it because my aliens are genetically related to humans, but unless they like very sour food they might not enjoy it. And it's probably bad for their teeth.

On the planet of Risayn the locals are almost exclusively pescatarian. Since First Contact, Earth-style sushi has become an incredibly popular dish in cities and smaller settlements alike, though they often use other ingredients instead of rice, which isn't well known to the inhabitants. It is seen as an important cultural link between Earth and Risayn and is often served when humans and the locals meet.

Two-hundred-ish years in the future, humans have become really good at tinkering with food genetics to boost their productivity.

Which is probably a good thing, because the majority of humans live in giant space stations, and so being able to grow food which is tolerant of extremes in temperature, gravity, radiation, etc. is really helpful in keeping everyone fed. Even so, getting truly fresh food is something of a small luxury - you can probably afford it, but not for everything.

One side effect of this is that almost no meat or animal products actually come from animals as we would recognize them. Even seafood products are derived from massive cell-culture farms, rather than complete organisms. Depending on your point of view this may or may not be a good thing; there definitely are people out there who claim to be able to tell the difference.