proper trimming is crucial. If the brisket isn't trimmed properly, chewy, inedible fat can remain and won't render down during cooking. While your butcher may help slightly when you order your cut ...
Just as the process of smoking a brisket isn’t for the faint of heart, neither is trimming it. But oh, will your efforts be rewarded. Sure, you can always ask your butcher how to trim brisket ...