Given the task definition and input, reply with output. In this task, you will be presented with the directions of a recipe separated by "," and have to fill in the "___" which is a step that is missing from the recipe.

Mix cucumbers and onions in a bowl with a lid.,Cover with salt.,Shake to allow salt to coat the vegetables.,Refrigerate at least 1 hour.,______,Add approximately 2 tablespoons apple cider vinegar and 1 cup water. Mix thoroughly.,Add more or less vinegar to taste.,Serve chilled.
Rinse the salt off under running water.