I loved this burger, I think it might be a new item on the menu. It was not very large and it did not come with a side.
From the description it seems it’s the same as their normal VG burger (ingredients: Beyond Meat, American cheese, special sauce, lettuce, tomato, pickle, and onion on a brioche bun) but with Bitchin’ sauce spread on the bun. Price was I think $13-$14. Packaging was cardboard.