An Etymological Dictionary of the German Language/prassen

by Friedrich Kluge

prassen, vb., ‘to riot, carouse,’ ModHG. only, from Du. brassen, ‘to gormandise’ (akin to bras, ‘feast’). OIc. brass, ‘cook,’ and brasa, ‘glowing coal’ (comp. OFr. brese, Prov. brasa), may be connected with it.