Place arugula in a bowl and add the olive oil, apple cider vinegar and sea salt. Stir the arugula until it is well coated.
Top the salad with the rest of the ingredients and enjoy!
Notes
Feel free to adjust ingredients to your taste. You can find the recipes for the sauerkraut and fermented onions on my blog. Links posted in this post too.
Recipe by Fermented Food Lab at https://www.fermentedfoodlab.com/arugula-and-smoked-salmon-salad-with-sauerkraut/