How long to cook Jerusalem artichokes: 35–45 min in the oven at 200°C (180°C fan), 10–15 min boiled and 15–20 min in an air fryer at 200°C. Every way to cook it is below, with the temperature and how to tell it’s done.
Scrub well (peeling is optional) and cut into even chunks.
How to tell it’s done
Soft inside, crisp and golden outside when roasted.
Questions
How long to cook Jerusalem artichokes in the oven?
35–45 min at 200°C (180°C fan), 400°F, gas 6. Toss in oil.
How long to boil Jerusalem artichokes?
10–15 min simmering in salted water with a squeeze of lemon. For mash or soup.
How long to cook Jerusalem artichokes in an air fryer?
15–20 min at 200°C (400°F). Toss in a tablespoon of oil.
Times are a guide for typical home portions: ovens, air fryers, microwaves and the size of what you’re cooking all vary. Check meat, poultry and fish with a thermometer before serving. Safe temperatures follow USDA and UK Food Standards Agency guidance, last checked 11 November 2026.