If you haven’t visited Legal Test Kitchen (LTK) in the seaport district, you should do so as soon as possible.

LTK is a concept restaurant of the well known Legal Seafoods, designed to be a more casual lounge- type experience with a much more interesting and dynamic array of foods; the chefs design the menu and update it with the seasons.

Without question, the most necessary thing to do at LTK is to try to the tuna burger. For skeptics who won't try a burger that isn’t beef- fear not. This burger is better than beef.

Featuring ground yellowfin tuna with chili sauce and a crumb mixture of oyster crackers and spices, grilled and then served on a buttery brioche bun with roasted red pepper mayo, this burger will make you forget all about your traditional beef patty.

Believe me, this burger is better than your average burger. And with a side of sweet potato fries, it’s unbeatable. It is currently rated #21 in Boston.com’s Battle of the Burgers , though it undoubtedly deserves the top spot.

Other delicious dishes include the Hoison glazed salmon over pad Thai, and the absolute best fried calamari I’ve tasted in Boston.

Another notable feature of LTK: the bar is bumping after hours. Great music and awesome bar tending staff makes for a memorable experience.

Swing by LTK at 225 Northern Ave in the Fort Point neighborhood.

Grade: A-