Prune: A Cookbook

We chose "Blood and Muffins" as October's theme on account of #Halloween (and because it's #fun), but we had no idea you can use blood IN muffins. As an egg swap. (Gross, we know, but stay with us.) The joke is on us, because it turns out that their protein compositions are so similar they behave almost identically. We're not advocating a return to the old ways when it comes to cooking with blood, but the science nerds in us were curious about this new development, so if yours is too, read on to learn what we discovered about blood (and other strange substitutes).