This is the first in the Bitterbynde series by Cecilia Dart-Thornton.
I read this on a recommendation and unfortunately it didn't work for me. To not particularly enjoy a book is annoying enough, but it's worse when the thing is lengthy. There are pages after pages devoted to describing every single bottle on a shelf. Descriptions that use ten words when two would work. A number of the reviews I've read said that it seemed that "the author wrote with a thesaurus", which rings true for me.
It's all very disappointing. There are interesting characters and places as well as quite elaborate world-building, but that's all buried under unnecessary words, descriptions, and tangents.