sweetie belle can’t not do bad cooking forever! soon or later she make a good cooking like in episode! sure rarity get use of the bad cooking of sweetie belle but be surprise to see are good sweetie belle get good in cooking! one thing sure is not rarity who teach her! to me is twilight and spikie! is one of magic leson! use magic and cooking like every unicorn! she learn good with twilight! twilight is the mentor on magic for sweetie belle! rarity is happy to know her princess teach sweetie belle to control magic and use magic! sweetie belle maby not good as twilight or starlight but she use her magic better then trixie! trixie who a full grow mare can’t a sample spell rightly! the only spell mastered befor starlight are start teach her is only the basic of all unicorn magic telekinetic!

Rarity: “I don’t understand… how did you make this?”  
Sweetie Belle: “Easy. I took lessons.”  
Rarity: “Lessons? From who?”
 

“…What? I read a book.”

@Cyborg_pony  

 
Meanwhile in another room  

This image is blocked by your current filter - click here to display it anyway

your current filter.

Rarity: You actually made eggs, and didn’t turn them to a blacken crisp or ignite the kitchen into a blaze?
 
Sweetie Belle: Yes.
 
Rarity: Who are you and where’s my sister?

That Sweetie is clearly a changeling.

Eggs 💪

Now it’s too raw