I worked in hospitality for a brief while in reception. Sometimes the female guests especially brides and recent child bearers would ask us to keep their breast milk in our fridges. On occasion they would forget about it and not claim it back, this one particular time had gone into the fridge quite thirsty and drank a load of what i thought was tescos own blue top. Turns out it was a brides breast milk that she had forgot to use or take out with her upon check in. Tasted just like the real thing though and now my conscience is at play, should I feel bad for not knowing as there was no label to say otherwise.