Seriously? I kills me that you go through all these charcoal filtration steps, just to dump those flavor syrups into it instead of infusing natural botanicals. Botanicals is where the art of Gin is. In the interest of quality, safety and just pragmatism, most people who make their own Gin just use bottled 190-proof neutral grain alcohol from the store and take it from there with infusing the botanicals. Excessive charcoal filtration is usually done in making whiskey for barrel-aging like Jack Daniels does, not so much Gin except for a few like Canadian distiller Piger Henricus, who filter their Gin through raw parsnips as a final step.