Cannibalism in Old Town Alexandria, or how pink lemonade was created

I went on a ghost tour last night of Old Town and towards the end of the tour we stopped at an icehouse. Our tour guide began telling us stories about things that had happened there and then he began talking about the town mortuary. Turns out that owners of restaurants would rent blocks of ice in the ice house to the mortuary across the street. Families could pay to keep the “stiff on ice”, or so to speak. The funny thing about dead bodies though is that they decompose even if kept refrigerated, so as the body decomposed and some of the ice melted, the bits and pieces of the dead body would re-freeze into the ice. Well unsuspecting families could come and buy a block of ice, even one that had once kept a dead body cool, and take it back to their homes. For some reason the people in Alexandria were really fond of lemonade and as they would put ice into their lemonade, it of course melted. This caused the bits and pieces of human decay that had been stuck in the ice to mix with the lemonade, and supposedly turning it pink.
I have no clue about the validity of this story, but I found it interesting that the people of George Washington’s era were supposedly unsuspecting cannibals.