Bring Stock To A Boil, Add Broccoli And Simmer For 10 Minutes. Remove Large Broccoli Chunks To A Food Processor. Saute Onion In Butter For 5 Minutes. Add Garlic And Saute For 1 Minute. Add Onion Mixture To The Processor Along With Almonds And Sesame Seeds. Process Until Smooth. Add Back To The Broth. Season With Salt, Pepper And Sesame Oil. Serve With Dollop Of Sour Cream.