Translation of "Specialty" in Japanese

That's his specialty.

それは彼の十八番だ。

- What's your speciality?
- What's your specialty?
- What is your specialty?

- この店の名物料理はありますか。
- ここの自慢料理はなに？

My specialty is particle physics.

専門は素粒子物理学です。

My specialty is French onion gratin soup.

得意料理はオニオングラタンスープです。

Do you know a good specialty store dealing in herbs?

ハーブの専門店を聞いたことがありませんか。

- What's your major?
- What's your specialty?
- What is your major?

専攻は何ですか。

I realized that it was crucial for me to have a specialty,

専門性を持つことが 極めて重要だとわかりました

But for one night only, they're in town for a seasonal specialty.

‎しかし今夜だけは ‎季節の特別メニューだ