Scrape the thin outer layer off the gourds with a knife
Thoroughly wash the gourd and pat dry
Slit one side of the snake gourds lengthwise with a sharp knife.
Scrape off the central core of seeds and pith, rinse
Insert the shorter snake gourd into the open cavity of the longer one. If they are both of similar size, then trim one so that it can be inserted tightly.
Thinly slice the flesh in small roundels and soak in slightly salted water for about 5 minutes
Drain from water and gently squeeze off the excess water
Mix remaining ingredients and toss in the sliced gourd and serve