In Torchlight 2 players can combine items to form new items, the process is called Transmutation. It’s similar to what was there in the first game but now features new recipes.
You can begin transmuting items at the start of Act 2.
Here are the following recipes along with the items need and result of the combination.
Name: Big Health Potion
Ingredients: Health Potion x3
Name: Giant Health Potion
Ingredients: Big Health Potion x3
Name: Huge Health Potion
Ingredients: Giant Health Potion x3
Name: Super Health Potion
Ingredients: Huge Health Potion x3
Name: Grand Health Potion
Ingredients: Super Health Potion x3
Name: Mega Health Potion
Ingredients: Grand Health Potion x3
Name: Big Mana Potion
Ingredients: Mana Potion x3
Name: Giant Mana Potion
Ingredients: Big Mana Potion x3
Name: A Random Set Item
Ingredients: Any Set Item x2
Name: A Random Spell
Ingredients: Any Spell x2
Name: A Random Unique
Ingredients: Any Unique Item x4
Name: Add Socket To Item
Ingredients: Any un-socketed item x1 + Any gem of equal or greater level x2
Name: High Grade Socketable
Ingredients: Socketable x3
Product: Random rare-quality gem
