Seared Octopus with roasted potatoes

Chef Jose Romo of the Hog Island Oyster Bar in Napa simmers fresh octopus until tender, then sears it on the stove top before tossing it with roasted potatoes, caramelized shallots, frisée lettuce, and an olive dressing. If using fresh octopus, buy it cleaned from your fishmonger. To clean it yourself. Frozen octopus comes already cleaned. You could also make this dish with store-bought cooked octopus. If using a cooked octopus, skip the cooking instructions below. Marble potatoes are simpl