Sauteed Beef Tips With Shiitakes

• 1 none
• 1 shiitake mushroom (sliced)
• 1/2 shallots (sliced)
• 230 gr beef tenderloin trimmings
• 120 ml wine (white)
• 180 ml veal stock
• 32 gr spinach leaves (cleaned)
• 30 ml olive oil
• 16 ml cream (heavy)
• 14 gr butter