Wash your cucumbers and slice the ends off. It doesn't need to be a huge cut, we're just trying to get brine in them.
Slice onion to desired size.
Place onion and cucumbers in a small bowl with a lid, along with salt. Seal and shake until everything is evenly coated. Refrigerate for one hour.
Add remaining ingredients to small sauce pan, heating on medium heat. Stir until all powdered ingredients are dissolved. Allow brine to cool.
Place cucumbers and onions in 1 pint jars, leaving an inch at the top. Pour cooled brine over the top, allowing 1/2 inch at the top.
Refrigerate for at least 3 days.