Barasa wani nau'in sinadari ne tare da dabarar C2H5OH.Ruwa ne mara launi, mai ƙonewa wanda galibi ana amfani dashi azaman sauran ƙarfi, mai, da abin nishaɗi.Ana samar da ita ta hanyar fermentation na sukari da yisti kuma ana iya samun shi a cikin abubuwan sha daban-daban kamar giya, giya, da ruhohi.Yayin da yawan shan barasa zai iya samun wasu fa'idodin kiwon lafiya, yawan shan barasa na iya haifar da jaraba, lalacewar hanta, da sauran matsalolin lafiya.