The Ultra Grind+Gold is a compact 2L wet grinder, uniquely designed with patented conical stones and rust resistant AISI 304 food grade stainless steel drum. The conical stones grind effectively without high batter temperature rise. Hence you get soft and nutritious idlis, and numbers of them too. Additionally batter remains fresh for upto 5 days. The AISI 304 food grade stainless.