Batch brew systems such as a Bunn brewer, brew a standard 64 oz pot of coffee. This type of brewer has been in use for many years and for good reason. They produce a large amount of coffee at a lower cost. Offices and homes brewing coffee by the pot save on average 75% over single cup brewing. More than half of all homes and offices in America are currently brewing coffee by the pot, and it’s not hard to see why.