YOU SAID:
I add milk to my coffee
INTO JAPANESE
コーヒーにミルクを入れます
BACK INTO ENGLISH
Add milk to the coffee
INTO JAPANESE
コーヒーにミルクを加える
BACK INTO ENGLISH
Add milk to coffee
INTO JAPANESE
コーヒーにミルクを加える
BACK INTO ENGLISH
Add milk to coffee
That didn't even make that much sense in English.