Describe the feature you have in mind.

trying to make a datapack to add the ability to have slicer use c:tools/knife or any knife to make 2 aquaculture:fish_fillet_raw or 2 raw fish fillets

Does this solve a particular problem?

No response

ive tried to make one but even using the template im very lost

figured it out, 1.21.1 needs recipe folder to be "recipe" not "recipes" and result to be "id" not "item"