This was my first time making kung pao chicken and wanted to make an authentic as possible, though gluten free, version. From my research, I knew I didn't want any seeds or stems. There were a little bit of the shells that had a very short stem sticking out of them, but not a lot.
I used 1 tablespoon that I ground in a coffee grinder and finished off using a pestle and motor to the oil that I warmed. Then, I discarded the peppercorns. The other 1 tablespoon I added whole towards the end of cooking along with the greens of scallions. They all melted into the kung pao without being crunchy. Prior to adding the whole peppercorns, I tasted the dish and it was slightly spicy. Once I addedd them, it was hardly spicy at all. I ended up adding a little red chili oil for some heat. So, the peppercorns obviously were doing their job well.
I couldn't have been happier. The dish was spectacular! I will be adding it to my regular rotation of dinner meals.
Note that after completing our meal, water tasted like it had baking soda or Alka Seltzer in it. The wine tasted off as well. The only thing I could drink that tasted good had to be sweet.