Mushrooms in Mustard

• 1 pound button mushrooms
• juice of 1 lemon
• 8 tablespoons

Wash and drain mushrooms. Trim ends of stems with a sharp knife and cut mushrooms in halves or quarters. Marinate in lemon juice and olive oil with peppercorns and bay leaves for at least 8 hours. Drain mushrooms (reserving marinade juices) and arrange them in an hors-d’œuvre dish.

To make a mustard sauce: combine 4 to 6