/datum/crafting_recipe
	var/name = "" //in-game display name
	var/list/reqs = list() //type paths of items consumed associated with how many are needed
	var/list/blacklist = list() //type paths of items explicitly not allowed as an ingredient
	var/result //type path of item resulting from this craft
	var/list/tools = list() //type paths of items needed but not consumed
	var/time = 30 //time in deciseconds
	var/list/parts = list() //type paths of items that will be placed in the result
	var/list/chem_catalysts = list() //like tools but for reagents
	var/category = CAT_NONE //where it shows up in the crafting UI
	var/subcategory = CAT_NONE
	var/always_availible = TRUE //Set to FALSE if it needs to be learned first.

/datum/crafting_recipe/New()
	if(!(result in reqs))
		blacklist += result

/**
  * Run custom pre-craft checks for this recipe
  *
  * user: The /mob that initiated the crafting
  * collected_requirements: A list of lists of /obj/item instances that satisfy reqs. Top level list is keyed by requirement path.
  */
/datum/crafting_recipe/proc/check_requirements(mob/user, list/collected_requirements)
	return TRUE