Preheat the oven to 325 degrees F (165 degrees C).

Mix ground beef, mustard seed, liquid smoke, curing mixture, garlic powder, and pepper together with your hands in a large bowl. Form beef mixture into two equal logs: wrap in aluminum foil with the shiny side facing the meat. Refrigerate for 24 hours.

Poke small holes in the bottom of each log using a toothpick. Place logs onto a broiler rack. Fill the broiler pan with 1/2 inch water.

Bake in the preheated oven for 90 minutes. Cool for 30 minutes. Chill in the refrigerator for about 12 hours before serving.