Everclear is a brand of pure grain alcohol, available in 190 proof
(95%) and a less common 151 proof (75.5%) variant. It is produced by
the David Sherman Corporation.
Because of its strength it is illegal in
many US states, and probably not available outside USA (at least not
the 190 proof variant). If Everclear is not sold where you live,
plain vodka can be used instead (Everclear is basically a strong form