Out of all the accessories I have this one is used the most. I just bought the basket so I can't wait to try that out. 

From roasting a whole duck or chicken, prime rib, or doing Mediterranean chicken this accessory is very versatile. I have seen pictures of doing fish in the new basket but have not been able to do that. 

Is it necessary, no. But if you want to switch it up and try something new that is relatively easy and makes you more involved in the cook then this is for you. I recommend watching a few "how to" videos first. 

As with most of KJ products you will not be disappointed.