Works now

code/datums/components/crafting/craft.dm

@@ -103,7 +103,7 @@
 				if(AM.flags_1 & HOLOGRAM_1)
 					continue
 				. += AM
-	for(var/slot in list(ITEM_SLOT_RPOCKET, ITEM_SLOT_LPOCKET))
+	for(var/slot in ITEM_SLOT_POCKET)
 		. += user.get_item_by_slot(slot)
 
 /datum/component/personal_crafting/proc/get_surroundings(mob/user)

code/datums/components/crafting/recipes.dm

@@ -11,3 +11,15 @@
 	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

code/modules/food_and_drinks/recipes/tablecraft/recipes_frozen.dm

@@ -244,6 +244,7 @@
 		/datum/reagent/consumable/spacemountainwind = 5
 	)
 	result = /obj/item/reagent_containers/food/snacks/snowcones/spacemountainwind
+	subcategory = CAT_ICE
 
 /datum/crafting_recipe/food/pwrgame_sc
 	name = "Pwrgame snowcone"
@@ -273,4 +274,4 @@
 		/datum/reagent/colorful_reagent = 1 //Harder to make
 	)
 	result = /obj/item/reagent_containers/food/snacks/snowcones/rainbow
-	subcategory = CAT_ICE
+	subcategory = CAT_ICE