ugat gvinah hee b-derekh clal l-vanah
"Cheesecake usually is white" should also be an acceptable answer.
You wouldn't say that in British English. You could say, "Cheesecake is usually white." or "Usually cheesecake is white." but not "Cheesecake usually is white."
Generally and usually are the same
Usually and mostly
Cheese cake is not one word.
According to Merriam-Webster and The Oxford dictionary, cheesecake is one word. On dictionary.com,
“also cheese cake” was listed.
cheesecake or cheese cake? Sometimes one of these forms is considered correct and the other wrong. And sometimes this happens reversed.
https://www.israelhayom.co.il/article/851265 shtisel brizel cheesecake test