lean x9 in crafting table= 1x pure lean
1x pure lean in crafting table= lean gem x9
smelt lean gem= edible lean
1x lean roots in crafting table= 4x lean planks
1x lean plank in crafting table= stick
3x lean gem +2x stick= lean pickaxe
3x lean pickaxe vertically on middle row= lean staff
portal- lean in nether portal shape and use activator (activator only obtainable in creative)

view picture to see portal

not completed, no known bugs but generally incomplete