What would be a good % to start with on Tutti Frutti from TFA? I received a sample from WL. I'm using a pre made base of 50/50 at 18 mil strength. I realize adding flavors will lower the nicotine content a bit but that's okay. I tried it at 10% and 15 % and it didn't seem to have a lot of flavor. Is it one that benefits from steeping? Any suggestions would be appreciated. Thanks. 