Check if item is craftable

[Echo69420]

I need to know how to check if an item is craftable, or preferably, that it will only choose an item that is craftable instead of checking if it is after it has chosen an item. Please help! Thank you (If there is not a simple answer there definitely should be an "if item is craftable" or something along the lines of that, in my opinion)

[Echo69420]

Ok so I am trying to make it give you supplies to craft a random item. Another problem I have is that the random item item that it chooses may not be the exact same name as the actual item. For example it told me to craft polished blackstone brick but the real item is called polished blackstone bricks (plural) so it's not the same. Someone please help

[Echo69420]

craftable items with the same name work, but apparently making concrete powder doesn't? the names match so maybe it's something else
(maybe I can make it detect if the craft is the same ID?)