Jellied Mushrooms with Mayo

Description
In Romanian: Ciuperci cu gelatina si maioneza

Ingredients

 * 2 lbs / 1 kg mushrooms
 * 1 onion
 * 1 teaspoon butter
 * gelatin
 * salt
 * mayo

Directions

 * 1) Wash and julienne the mushrooms.
 * 2) Place in a pot with a whole onion, one teaspoon of butter and salt.
 * 3) Cover with water and let boil until the mushrooms are soft.
 * 4) Remove the onion and strain.
 * 5) Leave the mushrooms aside and strain again through cheesecloth.
 * 6) Add gelatine to this liquid (one tablespoon of gelatine for each cup).
 * 7) Heat until the gelatine is melted.
 * 8) Place the mushrooms on the bottom of a deep plate (or several smaller molds).
 * 9) Pour the gelatin liquid on top.
 * 10) Strain when pouring.
 * 11) Refrigerate so that it gels.
 * 12) Serve with mayo.