See Dietary Meal Options?

Is there a way to view the menu for various dietary meal options on a flight route, similar to how you can see the regular à la carte meal options?

On my upcoming flight, I can see the standard dinner options are chicken and salmon. Last time, they ran out of chicken and I ended up with salmon, which I really didn’t like.

I occasionally eat vegetarian, so I’d be open to a vegan meal (which seems to be the only non-religious vegetarian option?), but I’d really like to see the actual menu before selecting.

Can anyone confirm if this information is available anywhere on the website or app?