How to pick the perfect pumpkin? For Sweet pumpkin look for a brown knob with sap (brown caramel type crystals) that form at the knob. For savory pumpkin, it's best to pick a knob that is green.
A good piece of beef is vital for this recipe. I get mine from Village Grocer or Ben's Grocer and I always ask for the tenderloin. The tenderloin means its the tender part of the cow. Get the butcher to trim it for you and tie it up into a log (like picture).