Could you please clarify what you meant? Perhaps you meant one of the following:
* Gravlax: This is a Scandinavian dish of cured salmon.
* Gavi: This is a type of Italian white wine.
* Gravy: A sauce made from meat juices, stock, and thickened with flour or cornstarch.
If you can provide more context or the original source of the term "gaviax," I might be able to help you further.