I believe there may be some truth to the formic acid thing. I have a friend who's on duty in Afghanistan right now, and in one of his special training programs, he learned about what kinds of bugs make for good nutrition when other foods are scarce. Carpenter ants ranked high for protein and flavor. He mentioned that they taste "lemony," which would be consistent with a high acid content. I can't personally attest, however, and I hope to keep it that way.

No doubt, terrestrials are a great way to go when you can't quite match the hatch.