Below is a walkthrough for the Try Cooking task in Rune Factory 5.
Client: Fuuka
Objective: Cooking something on the cooking table
Reward(s): Flour x1, Rice Flout x1
This task should show up after competing the Buy a Cooking Table task. After accepting it from the Task Board, Fuuka will ask you to prepare some food using the table. You can make any recipe that you have ingredients for. If you don’t have any recipes unlocked, then use 1 turnip if you have it to create a Pickled Turnip or buy some rice from the general store and use that to make Onigiri. Just keep in mind that doing it this way will cost extra RP. After cooking an item, return to the Task Board to complete the task.