If you mean an installation, where there is no customization, nothing setup, no currency, no company, no supplier etc, then almost all ERPNext installation comes empty & plain vanilla. It is also helpful to know it comes with a self configuration Wizard. 

Where can you get a vanilla install?

Kindly sign up at erpnext.com. You can sign up without a credit card for a 14 day absolutely FREE trial.

Bitnami