This is absolutely disgusting but…
Chả rươi, or sand worm omelet, is a seasonal Vietnamese dish made with unsightly, two-inch-long sea worms that some say give the “delicacy” a caviar-like taste.
Every year, in late fall, street food stalls in northern Vietnam, particularly in Hanoi, serve a very special dish that looks very ordinary at first glance, but that actually contains a very peculiar ingredient. Chả rươi looks like a well-done egg dish mixed with various herbs, but owes its meaty texture and seafood taste to the ingredient that gives the treat its name – sand worms. Beaten egg, tangerine peel, onions, dill and spices, before the two-inch-long sea worms are added. The result is an ordinary-looking omelet with a very meaty kick that fans can’t get enough of in the months leading up to winter.