Science, Tech, Math › Science Fake Blood and Guts Halloween Recipe Fake Blood and Guts for Haunted Houses and More Share Flipboard Email Print You can make fake blood and guts by covering fake flesh and organs with fake blood. Anne Helmenstine Science Chemistry Projects & Experiments Basics Chemical Laws Molecules Periodic Table Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated March 06, 2017 Mix up a batch of fake blood and guts for a haunted house, Halloween decoration, or as part of a creepy costume. This recipe is non-toxic and easy to make. You will need to combine two recipes: Fake FleshRealistic Fake Blood Arrange the flesh into whatever shape you desire. Cover the flesh and organs with the fake blood. If you want a bucket-o-blood with organs, use 2-3 times more blood than organs. You can thin the blood out with water and another few drops of red food coloring.