Methamphetamines are of particular interest to the DEA and other Federal Authorities because, like pot and unlike many other drugs, they are made in the USA and exported to other countries. MTV did a special on it, in which Serena Altshul travelled the Midwest and inland California, meeting meth addicts and people running labs.

If you want the recipe to make your own Methamphetamines, I'm sure you can find it on the internet. The Anarchist's Cookbook nodes might also contain a recipe.