Fetching details from the dictionary...

sushi; range of dishes made with vinegared rice combined with fish, vegetables, egg, etc.
壽しが大好きなんです。
I just love sushi.
友達と壽しを食べに行った。
I went to eat sushi with a friend.
壽しは日本を代表する食べ物だと思います。
I think sushi is a food that represents Japan.