Shader Graph Asset
The Shader Graph Asset is the new Asset type introduced with the shader graph. You can create a Shader Graph Asset from the Project Window from the Create menu.
For convenience there is a Create menu entry for Blank Shader Graph and Sub-graph. They can be found in the Shader sub-menu. Additional options may be provided by render pipelines. These options will create a new Shader Graph with required settings and Block nodes in the Master Stack for the selected shading model.