Apprendre à cuisiner / Riz, pâtes et pommes de terre
Comment obtenir des pommes de terre rôties croustillantes
Réponse courte
Use a hot oven, dry potatoes, enough oil and plenty of space. Parboil for 5–8 minutes for extra rough, crisp edges.
Valable quand
- The portion is 200–250 g per person, cut into even 4–5 cm pieces.
- The oven is fully preheated to 220°C conventional or 200°C fan/convection.
- Parboiling for 5–8 minutes is optional but gives rougher, crisper edges.
- Potatoes sit in one layer with visible space.
À quoi ça doit ressembler

Roast potato pieces with crisp golden edges
Ce qu'il te faut
- 200–250 g potatoes per person
- 1–1½ tbsp oil per 500 g potatoes
- Salt
- Large roasting tray
- Pot and colander for optional parboiling
- Spatula and fork
Étape par étape
1
Cut evenly, rinse and dry. Optionally parboil and shake to roughen the surface.
- Matériel: Pot and colander for optional parboiling + Spatula and fork.
- Chaleur: No heat during preparation.
- Temps: 2–5 minutes.
- Aspect: Pieces are dry and even; parboiled edges look floury.
- Si ça tourne mal: Wet, uneven pieces steam and finish at different times.
- Prêt quand: Pieces are dry and even; parboiled edges look floury.
2
Coat with oil and salt, spread in one spaced layer and place in a preheated oven.
- Matériel: Large roasting tray.
- Chaleur: The stated working heat.
- Temps: 5–40 minutes depending on ingredient and method.
- Aspect: Oil sizzles lightly and the underside colors without liquid pooling.
- Si ça tourne mal: A crowded, cold tray traps steam and leaves potatoes pale.
- Prêt quand: Oil sizzles lightly and the underside colors without liquid pooling.
3
Roast undisturbed until the underside has formed a crust, then turn once.
- Matériel: Large roasting tray + Spatula and fork.
- Chaleur: 200–220°C.
- Temps: 20 minutes before turning.
- Aspect: Oil sizzles lightly and the underside colors without liquid pooling.
- Si ça tourne mal: A crowded, cold tray traps steam and leaves potatoes pale.
- Prêt quand: Oil sizzles lightly and the underside colors without liquid pooling.
4
Turn once and roast until every side has crisp, golden edges.
- Matériel: Spatula and fork.
- Chaleur: Low heat or off during the final check.
- Temps: 1–5 minutes.
- Aspect: Edges are deep golden and crisp; the centers are soft.
- Si ça tourne mal: Turning too often tears the crust; black edges mean excessive heat.
- Prêt quand: Edges are deep golden and crisp; the centers are soft.
Si ce n'est pas comme prévu
- Wet, uneven pieces steam and finish at different times.
- A crowded, cold tray traps steam and leaves potatoes pale.
- Turning too often tears the crust; black edges mean excessive heat.
Sécurité alimentaire
Use dry maniques, keep your face clear of steam and place hot trays on a heatproof surface.
C'est prêt quand: Edges are deep golden and crisp; the centers are soft.