Roast American Lamb with Pistachios Purée
For the Rack of Lamb:
Brown butter in a large sauté pan over a medium flame. Add thyme and garlic to butter and quickly sauté. Place the rack fat side down in the pan and lower the flame enough for the butter to foam. Be very careful to avoid burning the butter. Continually baste the lamb with the pan juices until each cut has reached medium-rare (be sure to remove the tenderloin before the rack as it will have a much quicker cook time). Rest the lamb cuts for 10 minutes. Season with salt and white pepper to taste.
For the Lamb Loin:
Heat grapeseed oil in a small sauté pan. Sear the sides of the loin slowly and evenly. When the meat has reached medium temperature, remove from heat and allow to rest for 10 minutes.
For the Pistachio Purée:
Blanch pistachios until tender. Peel off any discolored skin. Blend with heavy cream until smooth. Season with salt and white pepper to taste.
To Assemble and Serve:
Smear a thick line of Pistachio Purée horizontally across the plate and place the Rack of Lamb in the center. Put the Tenderloin of Lamb and Lamb Loin on either side of the rack.