Combine beef, jalepeno, onion, garlic, and spices and let set aside in the rerigerator for 30-60 minutes.
Heat 1 tsp oil in your pressure cooker over medium high heat and brown half of the meat and set aside. Repeat with the second half of oil and meat.
Deglaze the Pressure cooker with the water and add the beef base and put browned meat back inches.
Cook on high pressure for 10 minutes and allow a natural release.
Remove beef with a slotted spoon and stir barbeque sauce into the cooking liquid. Cook over medium heat for about 5-10 minutes until sauce has reduced and is thickened. Add meat back into the sauce and cook for an additional 5 minutes.