YOU SAID:

I bought some butter which was so bitter that I bought some more butter to make the bitter butter better

INTO JAPANESE

私はとても苦いバターを買って、バターを良くするためにバターを買った

BACK INTO ENGLISH

I bought a very bitter butter and bought butter to improve butter

INTO JAPANESE

私は非常に苦いバターを買って、バターを改善するためにバターを買った

BACK INTO ENGLISH

I bought a very bitter butter and bought butter to improve butter