Question:
I turned on my own flame and told the housekeeper to warm up my chicken soup. I came to the kitchen to find she had taken a milchig pot and put the chicken soup inside and placed it on the flame to warm up. Is it safe to assume that the soup cannot be eaten and the pot is now treif?
Answer:
You are half right. The pot needs to be kashered but if it was clean the chicken soup is O.K. and can be eaten.
Sources:
Y:D 94:5 Ramo, ibid 95:1-2