Question: a must buy in osaka?
Answer: All things Takoyaki flavored. As you stroll along the streets of Dotonbori in Osaka, you'll probably see a Takoyaki store every few steps! ... 
Mochi. ... 
Kit Kats. ... 
Pablo Cheese snacks. ... 
Okonomiyaki flavored snacks. ... 
Osaka Petit Banana. ... 
Matcha madness. ... 
Peach flavored everything.