YOU SAID:

Betty Botter bought some butter but she said the butter's bitter if i put it in my batter it'll make the batter bitter. so betty bought some better butter better than the bitter butter and she put it in her batter and her batter was not bitter.

INTO JAPANESE

ベティが買ったバターを買ったのですが、バターに入れるとバターが苦くなるとのことでした。ベティは苦いバターよりも良いバターを買って、それをバターに入れましたが、バターは苦くありませんでした。

BACK INTO ENGLISH

I bought the butter that Betty bought, but when I put it in the butter, the butter became bitter. Betty bought better butter than bitter butter and put it in butter, but the butter wasn't bitter.

INTO JAPANESE

ベティが買ったバターを買いましたが、バターに入れるとバターが苦くなりました。ベティは苦いバターよりも良いバターを買ってバターに入れましたが、バターは苦くありませんでした。

BACK INTO ENGLISH

I bought the butter that Betty bought, but when I put it in the butter, the butter became bitter. Betty bought better butter than bitter butter and put it in butter, but the butter wasn't bitter.