К тому же, в одном видео картошку натирают очень мелко, а в другом -- довольно крупно.
I have had very mixed success with potato pancakes -- often they turn out gray and rubbery, not crisp and brown. (Unless I use a packaged "latke mix," which always turns out well.)
I will definitely try the "mashed potato" version, which I've never seen before. (Every recipe I've tried tells you to grate the raw potatoes and then squeeze out the liquid.)
P.S. Now, if anyone has suggestions for making сырники with Italian ricotta and/or American cottage cheese, instead of Russian творог, that would be really great!