In frying pan or cast-iron skillet, add pork, brown sugar and herbs de Provence seasoning. Brown pork until the sugar caramelizes and meat is almost cooked. Add in the celery and onion salt, and the red pepper flakes. Finish with freshly ground black pepper. Sauté until cooked. Taste for seasoning and add more if needed. Add in fresh parsley or thyme at the end for more flavor.