Add pork butt into the insert of a slow cooker. Pour in your BBQ sauce. Add Sirachi sauce to your taste, about 1-2 teaspoons. Cook on high for 4 hours or low for 8-10, until the pork falls apart when pulled with a fork.
BBQ Stuffed Portobellos
Drizzle olive oil into a large skillet over medium heat. Place portobello mushrooms gill side down into the skillet and cook for about 3-5 minutes. Flip over and cook another 3-5 minutes. Using a pair of tongs or a large spoon, place spicy pulled pork on top of the gill side of the portobello mushroom. Sprinkle with cheese.
Cover the skillet with a lid for about a minute to lightly melt the cheese. Remove the lid and sprinkle portobellos with salt and pepper. Serve warm.