Originally Posted by homebrewer_wes
What's the difference between Extract and brew in a bag?
Extract uses malt extract. Adding specialty grains to an extract batch provide color and flavor but very little in fermentable sugar. Steeping requires putting grains in a bag but that is not the technique that northern brewer is referring to. Brew in a bag (BIAB) refers to a technique to all grain brew, other than the traditional 3 tier setup. Many people go this route when the want to advance to all grain and don't want/have the money to buy all grain equipment or brewing space is an issue.