[personal profile] hutchingsmusic 2023-03-19 05:14 pm (UTC)(link)
"While the resulting material had a compressive strength of around 40 MPa, which is better than normal concrete, the process had the drawback of requiring blood on a regular basis."

J.F.C.

[personal profile] hutchingsmusic 2023-03-20 05:44 pm (UTC)(link)
Just realised: if the potato starch one was "cosmic concrete", the blood one is definitely "cosmic horror concrete".