If you can torch it glowing red it should be bright white. Only use a blue flame to do it. , if you have a good build, no hot spots, with proper contact, not too tight,. what I find takes away the initial silica taste is putting the silica in a small baggy and dripping some juice on it just enough for it to fully absorb then let it set over night. This gets it nice and primed & takes away the break in period for me.