Grinding is a crafting skill which uses a single ingredient and grinds it in a stone mortar and pestle to create ingredients for cooking or other trades. You do not need any tools to grind ingredients, just hitting 'L' by default is enough.

For more advanced grinding you need to learn the knowledge "Grinding: Beginner" from Ornella in Heidel City. The quest line leading to her quest is given by Jemkas in Northern Guard Camp at Gathering level Apprentice (4). He asks you to use the fence and seed he gives there to plant the seed, then go to Alejandro Farm, followed by sending you to Workshop Manager Ficy in Heidel City. The latter gives you "Learning Higher Processing Skills" which are three quests, one of them teaches the knowledge of Grinding: Beginner.


Product Created Ingredient #1 Ingredient #2 Skill Required
Mystical Spirit Powder icon Mystical Spirit Powder 1x Spirit Stone

Either of these:
Guardian (Green),
Destruction (Green),
Life (Green),
Guardian (Blue),
Destruction (Blue),
Life (Blue)
Beginner (0)
?? 20x Rough Stone 100x Barley
Black Stone (Armor) icon 1-3 Black Stone (Armor) 2x Hard Black Crystal Shard Beginner (0)
Black Stone (Weapon) icon 1-3 Black Stone (Weapon) 2x Sharp Black Crystal Shard Beginner (0)
Enhanced Flax Fabric icon Enhanced Flax Fabric 5x Flax Fabric 5x Shining Powder Beginner (0)
Polished Stone icon Polished Stone 10x Rough Stone Beginner (0)
Wool icon Wool 10x Knitting Yarn Beginner (0)
Silk icon Silk 10x Silk Thread Beginner (0)
Flax fabric icon Flax Fabric 10x Flax Thread Beginner (0)
Cotton Fabric Icon Cotton Fabric 10x Cotton Thread Beginner (0)
Insectivore Plant Sap icon Insectivore Plant Sap 5x Insectivore Plant Stalk
or 5x Insectivore Plant Root
Beginner (0)
Insectivore Plant Powder Icon Insectivore Plant Powder 5x Insectivore Plant Flower
or 5x Insectivore Plant Leaf
Beginner (0)
Resplendent Lapis Lazuli Icon Resplendent Lapis Lazuli 5x Rough Lapis Lazuli
or 5x Lapis Lazuli
Beginner (0)
Lapis Lazuli Icon Lapis Lazuli 5x Rough Lapis Lazuli Beginner (0)
Resplendent Diamond Icon Resplendent Diamond 5x Rough Diamond
or 5x Diamond
Beginner (0)
Diamond Icon Diamond 5x Rough Diamond Beginner (0)
Resplendent Emerald Icon Resplendent Emerald 5x Rough Emerald
or 5x Emerald
Beginner (0)
Emerald Icon Emerald 5x Rough Emerald Beginner (0)
Resplendent Topaz Icon Resplendent Topaz 5x Rough Topaz
or 5x Topaz
Beginner (0)
Topaz Icon Topaz 5x Rough Topaz Beginner (0)
Resplendent Sapphire Icon Resplendent Sapphire 5x Rough Sapphire
or 5x Sapphire
Beginner (0)
Sapphire Icon Sapphire 5x Rough Sapphire Beginner (0)
Resplendent Ruby Icon Resplendent Ruby 5x Rough Ruby
or 5x Ruby
Beginner (0)
Ruby Icon Ruby 5x Rough Ruby Beginner (0)
Freekeh Flour Icon Freekeh Flour Freekeh
or High-Quality Freekeh
or Special Freekeh
Beginner (0)
Teff Flour Icon Teff Flour Teff
or High-Quality Teff
or Special Teff
Beginner (0)
Top-Quality Cooking Honey Icon Top-Quality Cooking Honey 3x Wild Beehive Beginner (0)
High-Quality Cooking Honey Icon High-Quality Cooking Honey 3x Wild Beehive Beginner (0)
Cooking Honey Icon Cooking Honey 3x Wild Beehive Beginner (0)
Corn Flour Icon Corn Flour Corn
or High-Quality Corn
or Special Corn
Beginner (0)
Sweet Potato Flour Icon Sweet Potato Flour Sweet Potato
or High-Quality Sweet Potato
or Special Sweet Potato
Beginner (0)
Potato flour icon Potato Flour Potato
or High-Quality Potato
or Special Potato
Beginner (0)
Barley Flour Icon Barley Flour Barley
or High-Quality Barley
or Special Barley
Beginner (0)
Wheat Flour Icon Wheat Flour Wheat
or High-Quality Wheat
or Special Wheat
Beginner (0)

Furthermore, Gems can be ground to extract Black Powder.