In a large bowl, mix beef, curing mixture, mustard seed, garlic powder, cayenne, red pepper flakes, salt, and liquid smoke. Cover with plastic, and refrigerate for three days, mixing well once a day.
On the fourth day, preheat oven to 200 degrees F (100 degrees C).
Shape the mixture into five logs, and place on a wire rack over a large drip pan. Bake for eight hours, then remove to cool on paper towels. Let cool, then wrap logs individually in plastic wrap. Chill completely before slicing. They also freeze well.
