How do we speak "懐かしい(Natsukashii)" in English

Hello. I study English in San Francisco and I often have trouble to talk with people in English. For example, how to say "懐かしい(Natsukashii)" in English? Today, I saw "SUSHI BAR" and some Japanese food. It brought back my memories in Japan, so I wanted to say "懐かしい" in English, b