Technical Stages :
- Wash the leeks, slice the white part and cook in salted boiling water for 10 to 15 minutes.
- Drain and in a skillet with oil, slowly, for 20 to 30 minutes. Season.
- Preheat the oven at 240°C or 464°F. Pour the leeks in a gratin dish, Sprinkle with chese and broil for 15 minutes.
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The essentials
To make this recipe, some of these items will be required: