The following answer is obtained by our Expert Opinion :
Every snake is eatable, but some species are rare and endangered. Also a, 1972 Indian law forbids anyone to keep a snake.
But if you have to eat a snake
catch a snake
behead that snake (as the venom bags are in it's head only)
peel off it's skin
and then cook it by roasting, or boiling, or grilling.
then further process is up to you whether you want to make a soup, or curry or something else.