hey, my grandma makes this all the time. she said the key is to put potato first to soak up all the liquid from the fish. you should also pat the herring dry with a paper towel before you put it on, that helps a lot. for the beets, she grates them and then squeezes out a bunch of the juice in a strainer so it doesn't bleed everywhere and make it soggy. it's always pretty firm when she does it that way. gl :)