Wonderful accompaniment for fish and seafood even fried, chicken, vegetables, and salads. Original idea comes from Harumi Kurihara's book. She is sometimes quoted as a Julia Child of Japan - I think that's stretching it though. Be sure to use only silken or very, very soft tofu for this dish. This recipe tastes better after letting the taste meld in refrigerator for several hours. You can also omit cottage cheese and it works out fine. This recipe is to use expensive avocado to stretch it's taste and color and will not taste like guacamole with mostly all avocado.