Open the crescent rolls. Separate the 16 triangles. Place a spoonful of 1 generous tablespoon of duck liver mousse on each triangle. Starting with the end pieces, tie up together to form a knot on top.
Place on baking sheet. Brush with egg white. Sprinkle with thyme and red pepper flakes.
Bake 12 to 15 min. or until golden brown. Serve warm.