How do you do the glitch?
1. You need to start off with fortify alchemy items. Equip them
2. Make one fortify restoration potion
3. Drink it
4. Quickly unequip all your fortify alchemy items the. Re-equip them.
5. Make a new fortify restoration potion. Note that the effects are stronger. My 1st potion had a strength of 175%; my next one 375%.
6. Repeat from step 3 as often as you want.
Fortify restoration enhances alchemy. Finish off by making fortify smithing and enchanting potions to keep for future use.
I did the loop just 5 times and then enchanted a vanilla ebony sword with fire damage. Physical damage was 24, but fire damage was more than 13,000!