Corn Crusted Beef Tournedoes With Roasted Corn Sauce

• 2 ears of shucked corn (fresh)
• 240 ml beef stock
• 85 gr beef tournedoes
• 20 gr coarsely tomatoes (chopped)
• 18 gr shallots (chopped)
• 10 gr parmesan cheese (grated)
• 5 ml olive oil
• 3 gr butter (unsalted)