Cream Of Shittake Mushroom Soup

• 1 chives (minced)
• 1/2 oinion (minced)
• 950 ml beef stock
• 950 ml chicken stock
• 240 ml cream (heavy)
• 110 gr butter
• 80 gr shiitake mushrooms (sliced thin)
• 16 gr sesame seeds crushe in blender (toasted)
• 1 gr seasoned salt