Mash sardines, mayonnaise, and apple cider vinegar in a bowl until smooth.
Serve the sardine spread with cucumber slices on the side. Enjoy!
Notes
Leftovers: Refrigerate in an airtight container for up to three days.
More Flavor: Add black pepper or your choice of fresh or dried herbs.
No cucumbers: Use bell pepper slices, carrot sticks, celery sticks or crackers instead.