300g !!! :lol: :lol:
Given pretty much everyone has said it's great but use with caution, that's hilarious.
I've gone overboard with NS once before - namely with dry hopping an equal (large-ish) amount of Cascade and NS in a Fat Yak-ish Amber. Something *really* didn't work in it and it took 8 months for it to mellow - ie: I'm pretty sure it was from too much NS and it was a bit like drinking a beer that someone had poured Sav Blanc into. So it took the 8 months for the NS aroma to fully dissipate.
Subsequently I'd either never dry hop with NS or do so in low amounts (eg: 0.5g/l or less).
In general use, I'd probably stick with using only half as much as any other hop, such as with cascade in the FY clones. At least until I'm a bit more comfortable with it.
Fwiw though, it's an amazing hop that seems to do something few other hops do - the way it accentuates malts and blends with other hops. I see it as being similar to EKG and Fuggles in that sense, even though the specific aroma/flavour is quite different.