Mushroom Mousse

Ingredients

• 1/2 lb. fresh mushrooms, chopped
• 2 Tbsp. butter
• 2 tsp. unflavored gelatin
• 1/4 c. chicken broth
• 1 Tbsp. dry cocktail sherry
• 1/2 tsp. marjoram, crumbled
• 1 egg, separated
• 2 or 3 drops Tabasco sauce
• 1/4 c. mayonnaise
• 1 tsp. capers, drained
• 1 1/2 Tbsp. green onion, chopped
• 1/2 tsp. lemon juice
• 1/4 tsp. garlic salt
• white pepper
• 1/4 c. heavy cream