1/4 cup soy sauce (shoyu)
1/4 cup unsalted butter at room temperature
3 tablespoons broken black pepper
2 tablespoons chopped fresh thyme
1.5 kg beef mignon
Sauce
11/2 cups mayonnaise
11/2 cups heavy cream
1/3 cup finely chopped green onions
1/4 cup strong root vegetable puree
1/4 cup preserved caper, rinsed and drained
2 tablespoons freshly squeezed lemon juice
Black pepper to taste
1/4 cup soy sauce (shoyu)
1/4 cup unsalted butter at room temperature
3 tablespoons broken black pepper
2 tablespoons chopped fresh thyme
1.5 kg beef mignon
Sauce
11/2 cups mayonnaise
11/2 cups heavy cream
1/3 cup finely chopped green onions
1/4 cup strong root vegetable puree
1/4 cup preserved caper, rinsed and drained
2 tablespoons freshly squeezed lemon juice
Black pepper to taste
The night before, season the beef with thyme and black pepper
Let it rest for 2 hours at room temperature
Preheat the oven to a high temperature
Brush the beef with soy sauce and butter and place it on a baking sheet or grid
Roast in the preheated oven for 40 minutes or until the beef is golden brown
Remove from the oven
Let it cool completely
Cover with plastic wrap and refrigerate overnight
Sauce
Mix all ingredients well
Cover with plastic wrap and refrigerate
When serving, transfer the sauce to a bowl and place it in the center of a platter
Cut the beef into thin slices and arrange around.