Einstein Bros. invites fans on a cosmic journey with the launch of the new SuperNova Sandwich.

The SuperNova Sandwich features lox, avocado, tomato, cucumber, red onion, capers and onion & chive shmear served on a sesame bagel.

While on the surface lox looks almost identical to cold-smoked salmon, it’s different. Nova lox is a fillet of salmon that’s brined first, and then cold-smoked.

The chain also offers a Nova Lox Sandwich with lox, tomato, red onion, capers and onion & chive shmear on a plain bagel.

You can find the SuperNova at participating locations nationwide through May 2, 2018.

Image – Einstein Bros.