Kendra notes (October 2019) that they handcraft their bottlecaps out of leather: https://www.frdistilling.com/our-story/handmade-caps/
Company email (July 2018)
"We do not have any animal ingredients or animal biproduct in our whiskey or bourbon [or in the filtering process]"
TX Whiskey
Not Vegan
This product is listed as not vegan friendly.
What the company told us
Correspondence on record, with the date of each entry.