Don't forget Khmer desserts - Pong Aime sweets. These are available from stalls in most Khmer towns and can be excellent. Choose from a variety of sweetmeats and have them served with ice, condensed milk and sugar water. A must try is the Tuk-a-loc, a blended drink of fruits, raw egg, sweetened condensed milk and ice.
There is also a wide variety of fresh fruit available from markets. The prices vary according to which fruit is in season but mangoes around Khmer New Year, with up to 9 varieties on sale and mangosteen May/June are both superb.
Other popular Khmer foods which may be less palatable to foreigners include pregnant eggs duck eggs with the embryo still inside, and almost every variety of creepy or crawly animal spiders, crickets, water beetles as well as barbecued rats, frogs, snakes, bats and small birds.