Step 4: Give that Sucker a Bath

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If you don't have a sous vide machine, skip to Step 5 for cooking instructions.

Preheat your immersion circulator to 135F for perfectly medium rare meat.  Once it's hot, drop in your tri-tip and set your timer for 90 minutes (for a two pound roast).  The beauty of this cooking method is that the meat will never overcook.  However, I would not recommend cooking the roast for more than three hours because the connective tissue in the meat begins to break down and become a bit mushy.