Panagiotis Xanthis is the culinary director of the Ergon Foods group — the Greek hospitality company founded by Thomas and George Douzis, with sites across Athens, the UK, and the Gulf. He runs the kitchens at Ergon House on Mitropoleos, Ergon Bake House next door, and now Taverna Ermou on Ermou 98, which opened in September 2025.

“A fish soul. That's the menu, in three words.”

Xanthis has described Taverna Ermou's menu as having "a fish soul" — prawn saganaki, crab giouvetsi with orzo, dolmadakia grilled on a skewer, a deconstructed spanakopita served as a warm dip. The cooking is short, confident, and rests on the Ergon supply chain: small Greek producers, a tight pantry, a wine list that doesn't reach outside Greece. The London branch in Marylebone, opened March 2026, runs on the same menu and the same logic.