Cellophane noodles ("mung bean thread")

I bought a packet of these by mistake thinking they were rice noodles. What do I do with them and what are they good for? They are in one big block and are impossible to break up so I have to use the whole pack up in one go.

Thai salad!  Although.. I have some mung bean noodles, and though they're a bit rubbery when dry, I can still break them up.  A little worried about what you have..

Anyhoo, if they're the right noodles, dunk in boiling water, cook a bit, drain, cool.
I usually put something like this on them, but lots of stuff is fine:  prawns/other shellfish, cooked and cooled.  Lime juice, chili peppers, garlic, salt, galangal if available (ginger if not).  Some vegetables, anything that looks good.  Then quite a bit of cilantro.  Let the stuff sit in the juice for a while, then call me.

they are yummy chopped up finely after soaking and stuck in rice paper Vietnamese rolls or in any egg roll thingy really...

I love them in the Thai Basil rolls though and salads..