In a mixing bowl with the bread hook attached, add the sour cream, sugar, salt and butter. Allow to cool if it is too hot - you don't want to kill the yeast! Add the remaining ingredients and stir on low-medium in the mixer with a bread hook until well combined. The dough is slightly sticky, soft and smooth looking. Mixing with your hands or in a bread machine works, too!
Put plastic wrap on the dough and keep well covered in the fridge overnight.
Prep 2 rimmed cookie sheets with cooking spray or parchment paper. Now it is the next day, you want to have a little flour on your surface. Divide the dough into 20 pieces. Roll each piece out and you will get a 4-5" circle.
Mix your pulled pork with your BBQ sauce. Add as much or as little as you like. Dollop a little less than a 1/4 cup into each circle. Close up the kolache and twist the dough on the bottom. Roll the kolache bottom onto a smooth surface without flour to really seal it. I cup my hand into the letter "C" and roll it about 5 times. Place your 20 kolaches on 2 rimmed cookie sheets. Cover with a damp cloth or plastic wrap. Let rise one hour.
After 30 minutes of rising, preheat the oven to 350 degrees. After the 1 hour rise, place the kolaches into the oven and bake 15-20 minutes.
Allow to cool slightly. Reheat any leftovers in the microwave for 30 seconds.
These are delicious dipped in Queso! Or more BBQ sauce! Enjoy warm!