Any change in potency, flavor; or color?Yes, I've frequently washed out the BHO with the absolute least amount of ethanol possible, filtered it, and then evaporated it away under vacuum.
It allows me to filter, which removes some of the plant waxes and improves clarity. Flavor and smell is still good. If you use that on fresh frozen bho, it still ends up smelling as pungent as pinesol. I don't add enough ethanol to winterize, only to wash it out of the evaporation dish and filter.Any change in potency, flavor; or color?