This is the 1341st most frequent Japanese word.
たこ焼き
A Japanese snack of grilled batter balls filled with octopus, tempura, ginger, and green onion.
Here, 'たこ焼き' (Takoyaki) is used as the subject of the sentence, indicating that it is a notable feature or speciality.
たこ焼きは大阪の名物です。
Takoyaki is a specialty of Osaka.
Here, 'たこ焼き' (Takoyaki) is the direct object of the verb '作りました' (made), specifying what was made.
友達と一緒にたこ焼きを作りました。
I made takoyaki with my friends.
In this sentence, 'たこ焼き' (Takoyaki) is again the object, but now it is part of a question about the action of eating it.