What are the resources/ingredients I need to box a cooked recipe for imperial cooking? When I just put in th recipe it doesn't work. Do I need to craft boxes first?

You have to cook food First. Purchase house, get cooking untensil and mats. For example boiled eggs: 3egg+1 salt+1 cooking wine+6 Mineral water. Cook bunch of them. Then open processing window lt+up on D pad, left Option. Then Go to imperial cooking wir rb. Tap a button, inventory should open select green quality boiled egg, confirm with y button. Start crafting with y again. 20 green quality boiled eggs are needed for one Box. You cannot craft Master boxes if you dont have Master in cooking on that char. If you cooking skill is atleast one ranking higher than requred you have Chance to get 2 boxes instead of one. So boiled eggs are appretince Box, on appretince in cooking you can make them, on skilled you will have Chance to get 2 instead of one