Traditional Portuguese tavern-style round potato crisps: thin wafer-sliced Kennebec potatoes fried in pure olive oil until golden, blistered, and crunchy.
Rinse potato rounds in cold water to wash away starch, then soak in salted ice water for 15 minutes for maximum crispiness.
Drain thoroughly and spread across clean kitchen towels until completely dry.
Heat oil to 180°C in a wide deep pan. Fry potato rounds in small batches for 3-4 minutes, turning occasionally until golden and crispy.
Drain on absorbent paper, sprinkle with coarse sea salt, and serve warm as the classic Portuguese steak accompaniment.