Formal — to staff
Convenience · Store
You
すみません、これ温めますか？
すみません、これあたためますか？
Excuse me, does this get heated? (Implying: "Should this be heated/Can you heat this for me?")
Romaji: Sumimasen, kore atatamemasu ka? / Reply Romaji: Hai, atatamemasu ka? Obentou wa kochira no renji de atatamemasu ne.
Reply
はい、温めますか？お弁当はこちらのレンジで温めますね。
はい、あたためますか？おべんとうはこちらのれんじであたためますね。
Yes, would you like it heated? I'll heat the bento in this microwave.
Gesture & etiquette
Hold up the item in question, point to it, with a questioning look.
Do not assume all items need heating. Some (like onigiri) are typically eaten cold. Point to the specific item.
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