Earth + Fire = Stone
Earth + Water = Mud
Water + Fire = Steam
Water + Air = Vapor
Fire + Air = Blue Fire
Blue Fire + waiting = Fire
Fire + waiting = Ash
Ash + Water = Lye
Vapor + Steam = Cloud
Fire + Lye = Potash
Potash + Water = Lye
Mud + Fire = Shale
Stone + Blue Fire = Lava
Water + Blue Fire = Salt
Salt + Water = Salt Water
Salt Water + (Blue) Fire = Salt
Lava + waiting = Fire
Lava + Stone = Lava
Clouds x Clouds + waiting = Lightning
Sorry if I missed anything