YOU SAID:

The forming of sauce is source

INTO JAPANESE

ソースは、ソースの形成

BACK INTO ENGLISH

Source is the source of

INTO JAPANESE

ソースのソースでは

BACK INTO ENGLISH

In the source for

INTO JAPANESE

ソースに

BACK INTO ENGLISH

To the source

INTO JAPANESE

ソースに

BACK INTO ENGLISH

To the source