Questions & Answers about Это новое меню — для вегетарианца.
Why does the word вегетарианец change to вегетарианца?
The preposition для (for) always requires the following noun to be in the Genitive case. For a masculine noun like вегетарианец (a vegetarian), the Genitive case is formed by adding an -а to the end.
Wait, the dictionary form is вегетарианец. Where did the last е go?
This is an example of a "fleeting vowel." Many masculine Russian nouns ending in -ец or -ок drop that specific vowel when you add a case ending. That is why вегетарианец becomes вегетарианца, rather than keeping the е.
Why is the adjective новое (new) in the neuter form when меню ends in -ю?
Меню is a borrowed foreign word. In Russian, borrowed nouns ending in vowels like -ю, -и, or -е (like такси or кафе) are almost always neuter, so adjectives describing them must be neuter too. They are also indeclinable, meaning the word меню itself will never change its ending in any grammatical case!
What is the purpose of the dash (—) in the middle of the sentence?