Dry Malt Extract or DME is typically used in extract beer brewing, for yeast starters, and in some cases, all grain brewing. To make dry malt extract, the sugars from a brewing mash are transferred from a mash tun or lauter tun and completely dehydrated and in a vacuum chamber. Typically, hops are not added to a malt extract.

 

A wide variety of home brewing dry malt extract is available here:

Dry Malt Extract