Serves 4-6 as a side
You want to soak the onions in ice water for 20 minutes to reduce their pungency (unless you like a lot of bite).
Cucumbers go well with a variety of herbs and flavors. Dill is a common one but, parsley, basil, and cilantro are excellent too so play around with these ideas.
¼ of an onion (or however much you want/need to use), diced (soak with onions in ice water for 10-20 minutes –see headnote)
1 large cucumber, (about 1 pound), sliced lengthwise in quarters and then sliced into ¼ inch chunks.
¼ cup finely chopped parsley
2 tablespoons (or to taste) rice wine vinegar or 3-4 teaspoons red wine vinegar
2 tablespoons olive oil
freshly ground pepper
Mix all ingredients together well, adjust seasoning to taste and enjoy.