In a large chilled bowl, add the first ten ingredients. Mix with a spoon to combine and adjust the seasoning with salt and pepper if needed. Pack 6 ounces of the tartare into a ring mold set on a chilled plate. Push down with a spoon to keep the mixture compact.
Top with 20 grams of the caviar, smoothing out the top gently with a spoon and remove the mold.
Serve with 6 croutons and 2 ounces of greens on the side.
Serves 4
Submitted by: Petrossian New York