Grilled and Chilled Beef with Buttermilk-Horseradish Sauce.

You can cook Grilled and Chilled Beef with Buttermilk-Horseradish Sauce using 9 ingredients and 3 steps. Here is how you achieve it.

Ingredients of Grilled and Chilled Beef with Buttermilk-Horseradish Sauce

1. Prepare 2 tbsp of extra virgin olive oil.
2. You need 3 of garlic cloves, minced.
3. Prepare 1 tbsp of ground fennel.
4. Prepare 1 tbsp of minced thyme leaves.
5. You need of kosher salt and pepper.
6. Prepare 1 (3.5 lb) of center cut beef tenderloin roast.
7. It's 1 cup of buttermilk.
8. Prepare 1/2 cup of mayonnaise.
9. Prepare 2 tbsp of freshly grated horseradish.

Grilled and Chilled Beef with Buttermilk-Horseradish Sauce instructions

1. In a small bowl, whisk the oil, garlic, fennel thyme, 1 tablespoon of salt, 2 teaspoons of pepper. Rub the paste over the beef and bring to room temperature..
2. Light a grill. Grill the roast over moderate heat, turning often until charred and registered at 118 degrees on a thermometer. 35-40 minutes. Tent with foil on a carving board and let cool for 30 minutes. Wrap roast tightly and let cool completely. Refrigerate overnight..
3. In a bowl, whisk the buttermilk, mayonnaise and the 2 tablespoons of horseradish. Season with salt and pepper. Carve the roast into 1/4 inch thick slices and serve cold with the buttermilk sauce and more freshly grated horseradish..