To get the ultimate crunch like you would at a pub, you will want to fry your buttermilk chicken in a pot on the stove. Heat about 3/4" of oil in a large pot over medium-high heat (350-375 degrees). Once it's hot and sizzling (toss in a little piece of breading to see if it's ready), place your chicken tenders in the pot. You don't want to crowd them, so cook in batches if you need to. Each batch will take 6-9 minutes (depending on how crowded the pot is & how hot the oil is), but make sure you flip them around the 3-4 minute mark so the entire chicken tender is evenly cooked and perfectly crunchy. Use a meat thermometer to make sure the inside of the chicken has reached 165 degrees.