As far as I know, Darth Vader is never shown eating after he receives his injuries and armor. The closest we get is the fact he shows up for what is, ostensibly, a dinner party on Cloud City:

[![Vader in Cloud City Dining Room](https://i.stack.imgur.com/CVJwr.jpg)](https://i.stack.imgur.com/CVJwr.jpg)

He obviously would not have partaken in this meal, though, as that would require him to remove his helmet. However, we do know that Vader sometimes spends time without a helmet, in what appears to be a special chamber, but the reasons for this aren't clear from the movies themselves:

[![Vader putting helmet back on in the meditation chamber.](https://i.stack.imgur.com/voDzF.jpg)](https://i.stack.imgur.com/voDzF.jpg)

Certainly his breathing problems could pose complications with eating, but it's not clear that this precludes eating. So does Darth Vader actually eat, or does he receive sustenance via special medical means?

Both canon and Legends information are welcome.