Breakdown of haha wa, daikon to kinoko o tsukatte, atatakai udon o tsukurimashita.
Questions & Answers about haha wa, daikon to kinoko o tsukatte, atatakai udon o tsukurimashita.
は marks 母 as the topic: As for my mother, ...
That is a very natural choice here because the sentence is simply telling you what she did.
If you used が instead, it would put more focus on mother as the one who did the action, as if answering a question like Who made the udon?
- 母は = As for my mother, she made...
- 母が = My mother is the one who made...
Both can be grammatical, but は fits this neutral statement well.
In this sentence, 母 normally means my mother.
Japanese often does not use words like my when the relationship is clear from context. Also, when talking about your own mother to other people, 母 is the usual humble/plain form.
A useful contrast:
- 母 = my mother, when referring to her from your side
- お母さん = mom / mother, often when addressing her directly or referring to someone else’s mother more politely
So here, 母は is most naturally understood as My mother...
