15 Egg Hacks Every Cook Should Know

1. Combine crushed eggshells and apple cider vinegar.

Price: $10* Supposedly used as a treatment for hurting joints and acid reflux This treatment has been used for a very long time. While it may sound like an old wives' tale, there are others who firmly believe in it. To treat acid reflux, a tincture made with eggshells and apple cider vinegar is the recommended course of action.

Stir together crushed eggshells and apple cider vinegar. ©Shutterstock/ThamKC Shatter eggshells into a glass container. After that, pour apple cider vinegar over the shells and close the jar lid. Allow the mixture to rest for two days, or until the shells have completely dissolved. This treatment, according to Prevention, will relieve "sore, aching joints" in addition to acid reflux.