Culver’s second seafood sandwich, the Northwoods Walleye, is only available during spring, and it’s worth making a special stop to grab it. Like the chain’s cod sandwich, the walleye is battered and fried fresh, which makes all the difference in the world compared to a pre-breaded fish filet that comes to the store frozen. Because it’s battered and not breaded, it’s got little wisps of extra crunchy bits, and the walleye is mild, flaky, and tastes like the best lake fish you’ve ever had. It’s a big piece of fish, too, but the oblong, hoagie-shaped toasted bun holds it neatly.