A few more days had passed, though Amethyst and Galaxy had still not found the needed spell. Their days were a mix of study with Luna, research in the Archives, and some exercises between meals. Luna continued practicing with the game, though only sparingly. Twilight had visited with Celestia and was quite impressed to see Galaxy. The resemblance between the two librarians was remarkable -- even causing the Solar Princess to blink in surprise a couple of times.

Twilight's "private lessons" were exactly that -- private. Amethyst and Galaxy were escorted to the dining hall to wait until her lesson was finished, even though they had been promised instruction from the Alicorn. After Twilight's lesson was finished, the two were escorted back to Celestia's bedchamber, where they were provided a lesson in magic. They were quite impressed, as they were taught new magic they'd never learned before. Galaxy expressed a degree of astonishment at the complexity of the magic involved, stating that even her efforts to study Starswirl's magic had not provided her with the purview under which this new magic was categorized. Celestia explained that she was in the process of teaching what was once described as forbidden magic and that it was only to be used in dire circumstances.

The Solar Princess requested a progress report from Amethyst, who responded by hanging her head and explaining that there was a certain book in the Archives which had gone missing, and that there was a possibility that the missing book contained the spell needed to return. Celestia then offered to allow the dark purple mare to search her private collection, though she expressed some reservation about doing so.

"There are certain tomes which contain very powerful spells -- some of which I don't want even Twilight to learn until the time she is ready. I shall supervise your search through my collection," she had advised.

Amethyst offered sincere gratitude for her offer and the search began immediately. The Solar Princess' private library was nearly as comprehensive as the Starswirl wing of the Archive, so this search was going to be time consuming.

"I can only offer you an hour per day to search my collection," Celestia stated. "So during your stay here, you shall need to seek employment in order to repay the treasury for your room and board. What do you propose?"

"Have you heard of a food called pizza? I was thinking about starting up a pizza business," Amethyst mused.

"My chefs bake it every once in awhile, though I don't particularly care for it," the Alicorn said flatly.

"The pizza where I come from is not very good," Galaxy offered.

"They probably don't know how to make it right," Amethyst chuckled. "I know of a few recipes for sauce and dough -- I need a good cheese to use as a base topping. I recall a few certain recipes for meat toppings, though I know --"

"Mama! Meat is forbidden!" Galaxy exclaimed in indignation.

"Please continue, Amethyst. I am intrigued," the Alicorn offered.

"What I was going to say is that vegetable protein can be used as a meat substitute, and can be flavored in such a way as to simulate the specific spicy taste I can slightly recall from my time as a human. I may not be able to accurately replicate the flavor, but I will give it my best try. Other than that, if I may use your kitchen, your Majesty?" the dark purple mare asked, giving a quizzical glance at the Solar Princess. She nodded her head and motioned for the two unicorns to follow her to the kitchen behind the dining hall.

Once there, Amethyst checked the cabinets and pantry for ingredients. "Please have your best chef prepare a pizza so that I may taste the quality."

Celestia instructed her top chef to bake a pizza. About 30 minutes later, it was brought out. Amethyst was struck by the initial appearance, most notably the lack of cheese.

"This is not pizza," she stated contemptibly upon first glance. She took a slice and bit into it, immediately spitting it out. "This is definitely NOT pizza. I don't know what your chefs have been taught about making pizza, but without cheese and a zesty sauce -- the dough isn't even fully cooked," she complained. "Let me show you how this is done."

Amethyst then proceeded to add several spices to the sauce used, found some white cheese, and thinned out the dough used for the pizza. Applying a layer of the new sauce formula and topping it with shredded cheese, she cooked it at a higher temperature for half as long. She removed the finished product and sliced it, offering a slice to her daughter and the Sun Goddess, who gave it a tentative bite, then gobbled it up, along with the rest of the pizza.

"If you can provide us with food like this on a regular basis, Amethyst, I believe I can make special exceptions for your stay here," the Alicorn stated warmly, giving her a big smile.

"Mama! This is -- where did you learn how to make food like this? Please let me have some more!" Galaxy exclaimed in astonishment.

The dark purple mare found herself becoming very busy making and baking lots of pizza for the entire staff, teaching the chefs how to make it properly. When the entire support staff of the castle was introduced to it, they too were astonished by the tastiness. Luna herself demanded as much as she could get her hooves on as well!

"With your permission, your Majesty, I would like to open a business selling pizza to the ponies of Canterlot," Amethyst stated reverently.

"But of course, Amethyst! I shall make arrangements for a storefront for you in a good location. What name do you propose for your business?"

"I plan on calling it 'PD7 Pizza'," she replied solemnly.

"What does PD7 indicate?" the Alicorn asked, giving a slightly quizzical glance.

"The name I had originally intended to call myself in my new form was Purple Dix-Sept, with the nickname of PD7 -- but Twilight stated that that sounded like a dumb name. Even so, I think it would make for a catchy business name."

"I shall approve the necessary funding, though I shall request a percentage of the profits for tax purposes as well as paying off the loan I am granting you for your initial start up. I should also like to sample your product once you have established your business in earnest."

"Thank you very much, your Majesty!" the purple mare grinned.