YOU SAID:
I had been having a chonky beer
INTO JAPANESE
濃いビールを飲んでいました
BACK INTO ENGLISH
i was drinking dark beer
INTO JAPANESE
黒ビールを飲んでいました
BACK INTO ENGLISH
drank dark beer
INTO JAPANESE
黒ビールを飲みました
BACK INTO ENGLISH
drank dark beer
Well done, yes, well done!