Once you have your smoked brisket and you have let it rest, you need to cut the point off, make sure you do this against the grain.
Place your squares into a foil pan and generously coat with your favorite BBQ sauce. I like to use a slightly spicy homemade smokey BBQ sauce that has a little bit of a spicy kick.
Place the foil pan back into the smoker at around 275°F for a further 1.5 - 2.5 hours until the cubes have become nice and charred. You are looking for the end to be nice and burnt.
As much as you want to eat the burnt ends fresh off the smoker, you do need to let them rest for a good 10 - 15 minutes. Lightly salt and cover with foil. This will allow the burnt ends to really crispen up and become more delicious.
Serve with lashings of BBQ or hot sauce.