Maybe not the advice you're looking for, but have you considered throwing it in with some better tasting lozenges like chai or lemon? My apologies for the somewhat useless advice, but when I was taking noopept lozenges that tasted like a new fresh hell I would throw a couple lemon ones in with it and it became much more tolerable.
Also, does the pH of ketamine affect mucosal/sublingual absorption, similarly to how coca is best chewed alongside llipta? (Llipta is soda ash, often mint flavored in my personal experience)