An untrimmed or packer brisket will have both pieces together, aka the best of both worlds, though given their differences in size and fat content, some cooks prefer to opt for just one or the other.

We are using the entire packer brisket, smoking it ... This can take 3 to 5 additional hours depending on size of brisket. Place wrapped brisket flat in a cooler with no ice and let rest for an hour.