From FREJUS.
Conservation: if it is fresh, 4 to 5 days , entire with its stem, in the vegetable compartment of the refrigerator. If it is cooked, not more than 24h, even it's cold.
Cooking: 20 to 40 mns in ebullient salted water , according to the size, 12 mns with the pressure-cooker.
To pour a lemon juice in the cooking water to preserve its green color.
8 mns per artichoke with the microwaves, to cook under food film.
Once cooked, to drain the artichoke head in bottom.