Still a relatively new term, non-alcoholic distilled spirits follow a similar path to essential oil production. Typically produced in a pot still, not dissimilar from the kind used to make traditional spirits, the still concentrates the flavour of the plant and botanical matter placed in it, leaving producers with an aromatic water called a hydrosol. Without the presence of ethanol that you'd typically find in alcohol production, you are left with an aromatic, flavourful base well-suited for mixing.