Bring a medium sized pot of water to a boil.
While it heats, cut a small x into each of the chestnuts.
Once the water boils, carefully lower the chestnuts into the water and cook at a low boil for approximately 25 minutes.
When time is up, drain chestnuts and rinse with cool water.
Peel away the hard outer shell and the inner papery layer. You should have approximately 2 1/2 to 3 cups of peeled chestnuts.
Place peeled chestnuts in a blender or food processer with the honey, vanilla seeds, and salt.
Add 1/2 cup of water and pulse to combine.
Continue processing/blending, scraping down the sides regularly, and adding water until you've achieved a smooth, not too thick consistency.
Scrape into small jars and refrigerate.