I think котлеты should definitely be on the list! (In US English, I might translate the word as "meatloaf burgers" -- although some people might prefer the term "croquette".)

And I would mention Бородинский хлеб as a very popular style of so-called "Russian black bread." (Which is actually a light brown rye bread -- more sour and heavy than American rye breads, often flavored with coriander seeds instead of caraway seeds, and not as dark as German-American "pumpernickel", which gets its almost-black color from caramelized sugar.)

Then there are the so-called "vegetable caviars" which can be made from finely chopped mushrooms, pumpkins, eggplants, etc. -- there are many variants using different vegetables. But "eggplant caviar" (баклажанная икра) is possibly the most common type.