Why not just buy nitrates?
There is a article abstract on PubMed that shows the same effect simply by taking the nitrates and/or nitrites directly. The Feds might think you're making a bomb if you buy heaps but luckily you don't need much.
http://www.ncbi.nlm.nih.gov/pubmed/17635415
Or possibly you could try eating lots of fresh fruit and vegetables.
There is a article abstract on PubMed that shows the same effect simply by taking the nitrates and/or nitrites directly. The Feds might think you're making a bomb if you buy heaps but luckily you don't need much.
http://www.ncbi.nlm.nih.gov/pubmed/17635415
Or possibly you could try eating lots of fresh fruit and vegetables.