Pomegranates and barley are harvest foods — jewel-bright and sturdy enough to sit at the center of a long table. This salad is made for gatherings: it can be assembled hours ahead and only gets better as it sits.
Simmer the barley in salted water until tender with a little chew, about 30–35 minutes. Drain and spread on a tray to cool.
Whisk the olive oil, lemon juice, honey, salt, and pepper into a bright dressing.
Toss the cooled barley with most of the dressing while it's still slightly warm so it drinks it in.
Fold in the pomegranate seeds, parsley, and walnuts. Scatter the feta over the top.
Finish with the last of the dressing and serve at room temperature — the way harvest food was always meant to be eaten.
Make it the centerpiece of a Sunday table and let everyone pass the bowl twice.