Barron Freeze sat down in a large grand chair and thought desperately about what the other ingredients to the formula could be- and then he came up with a last resort idea: to look in the years and years old ashes of his father’s laboratory fire place.
He used the chunk of emerald from the Time Travelers staff to zap himself there immediately, but ended up standing in a pile of rubble where his father’s laboratory used to be, by that time his father’s laboratory had decomposed and fallen down- he didn’t go through time, he went through space.
Then he got another idea. He decided to go back in time and take the formula book from himself. He went back and used his powers to wipe away his memory of this happening after he took the formula book from himself, which of course meant that adult Barron Freeze was standing there wondering why he had the formula book in his hand. He hadn’t wiped away his memory of collecting the ingredients, so he came up with a rough idea of why he had the book.
He zapped himself back to his laboratory and remembered completely. He looked up the other ingredients. There were five more things he had to get. He brought the stringy lump of hot but icy material he had put in the cage earlier back to life and flew away on his creature, back to the dimension gloom, to get something else. He went to the place where he had set down Mount Gloom, that his castle used to be upon, drilled straight down into where his old caverns were, drilled straight through the wall of that cavern and took five packets of chrizzlebeak dust, and then got two fup balls.
He ran desperately around the room until he found one piece of plastic which was very rare in the outer dimensions. He zapped himself back and put all his ingredients into a big pot of boiling molten lava. The chrizzlebeak dust packs screamed when they went in. Chrizzlebeaks, even if they are dust, scream anytime they are near heat. He dropped in the fub balls and all the other ingredients and stirred it up as fast as he could, then put it in his freezer and the molten lava cooled until it was a pure, glowing red rock that squelched when he touched it.
He brought the formula book and the serum with him and went to the evil condos that had recently been built on the underside of the split tree dimension. Barron Freeze did a presentation and showed everyone the spell book. Everyone clapped and brought in more of the ingredients to make a larger quantity of the serum. They each brought five cauldrons of the stuff on space yachts to destroy the universe when the time was right. They got bored waiting, so they all took wooden planks from their space yachts and built a disco floor and a disco ball while they waited.