Ah, yes--chipotle mayo. THat's one of my fave's for next day sandwiches. I've used it for little apps as well: tiny cornmeal and herb biscuits, split, topped with a little pile of brisket and a 1/2 espresso spoon of chipotle mayo. One bite--they're small--but really good.
Yup, the butter-de-fatted drippings or butter-stock-sauce-drippings thing works really well. Boosts beefiness easily. It also works well whisked into mayo (as an alternative to chipotle) and even works as a salad dressing. Add a little cider vin, whisk well, then toss a blend of romaine and baby greens and arugula with it; fold in some diced avocado and slivered Vidalia and plate it. Next, scatter some diced ripe tomato around the plate and top with shredded or sliced-then-crosscut brisket, just warmed through, drip on a little more dressing and serve.
Another very good use for it: Make guacamole. Warm corn tortillas. Meanwhile, warm shredded or slivered brisket in the butter-stock-sauce-drippings combo and add some chipotle. Put a few T of guacamole on each tortilla, roll to encase, then place one or two on each plate. Spoon the brisket and sauce over the guacamole enchiladas, top with minced Vidalia (with a little diced tomato, if desired); serve.