Fish in Tomato, Rhubarb, and Blood-Orange Sauce

Tomato’s unexpected coupling with puckery rhubarb blossoms into a delightful marriage of flavors here. Worlds apart from the flat tomato-based sweet-and-sour foods I loathed growing up, this Sephardi fish classic sparkles with a cool, clean tang. I add just a bit of honey, relying more on caramelized onions, bright blood oranges, and the sweet heat of fresh ginger for the subtle but complex sweetening needed to tease the ingredients together seamlessly.

I steam or poach the fish sep