Dear Rabbi Simon
I came into the kitchen after Shabbos (having read in the weekly Torah portion for the day about not mixing meat and milk [Ex. 23:19]) and found my youngest eating hot chicken soup in a meaty bowl with a milk spoon (a stainless steel spoon with enamel handle). Yikes! Please advise if either can be salvaged.
Sorry to hear of your kitchen misadventure. These things can happen in the most meticulous households. Assuming that the spoon was not used for hot dairy food within the previous 24 hours, the bowl is OK. The spoon needs to be koshered through hag’alah ie carefully immersing it in its entirety in boiling water for a few seconds. It is preferable to then rinse it in cold water.
Rabbi Rashi Simon