Making the Ultimate Unus Annus Burger

Summary
Mark and Ethan mix and match hamburgers from various fast-food chains to make their ideal patty, later dubbed the Unus Annus Sandwich. According to their cookbook ending card, the sandwich is comprised of:
 * The bottom bun of 1 McDouble
 * 2 McDouble patties with cheese cut in half (save 1/2 for later)
 * Crispy buttermilk chicken breast cut in half
 * Tomatoes (on the Unus half)
 * Mediocre French fries (on the Annus half)
 * 2 pickles (1 pickle for me, 1 pickle for you)
 * Big Mac middle bun with lettuce and secret sauce up (fuckin' plop it on there for maximum flavor)
 * 2 McNuggets (cut and applied hemispherically)
 * A layer of fries (not too many on the Annus side, he already got some)
 * The diced onions from 1 McDouble (scraped with a knife)
 * Cheese (from in-between the meat patties of a McDouble)
 * More pickles (on the Annus half)
 * Another slather of onion (from the cheese extracted McDouble)
 * Bar-b-Que sauce (spread on the bun with a knife as though you were a culinary genius)
 * The top of a sesame seed bun

Running gags

 * Throughout the video, the SCP model from one of preceding episodes is used as Amy's stand-in, with Mark and Ethan addressing the puppet as if it was a real person.