Place the raw pecans on a cutting board and chop them with a sharp knife into coarse pieces. Keep the chopped nuts temporarily on a plate or in a small bowl for later use.
Scoop the full-fat quark from the container into a large mixing bowl. Sprinkle the pinch of unsweetened vanilla powder directly over the quark. Stir everything together vigorously with a spoon, just until the powder is completely and evenly incorporated into the dairy and no lumps remain visible.
Divide the mixed quark with a spatula or large spoon into two bowls. Make sure the amount of quark in both bowls is approximately equal.
Sprinkle the coarsely chopped pecans over the top of the quark in both portions. Finally, distribute the knife tip of Celtic sea salt over the nuts to enhance the natural flavor. Serve the bowls immediately.