McDonalds Limited Time - Chicken Tatsuta Setouchi Lemon Tartar

I was browsing through McDonalds twitter and noticed a new limited time burger campaign that just came out. It was a Chicken Tatsuta burger. I was curious as to what kind of burger this is, so I checked it out on their website. 

The Chicken Tatsuta burger has been loved since the 1991 (wow that's 30 years already). It is a popular product that is unique only to Japan with the chicken patty flavored in ginger and shoyu. 

I decided to get the Chicken Tatsuta Setouchi Lemon Tarter because I am a fan of anything citrus. And I love lemony tartar sauce haha. 

I really enjoyed the burger and would like to try it again. There is also a rice burger type that is available in the evenings starting from 5 pm. They also have a Hitokuchi Tatsuta which are bite sized crispy little nuggets. I wonder what kind of sauce they offer with those since I feel the lemon tartar was a key point in the burger.