Grilled Artichokes in Lemon Sauce

• 2 lemons
• 4 globe artichokes
• 6 tbsp olive oil

Fill a large bowl with water and squeeze in the juice of 1 lemon. To prepare the artichokes, cut off the stem of an artichoke so that it will stand up straight in the casserole. Cut off the top 1cm of the artichoke with scissors or a sharp knife, then cut off the tips of the remaining large petals with scissors. Prize open the top of the artichoke with your fingers, pull out the purplish and ye