South East Asia, so therefore also Cambodia, has a wide range of fresh fruits and many different species of fish, vegetables and rice. Every day local people go to the markets and buy these fresh ingredients for one cooking day. The inhabitants are eating food as a daily activity at the side of the street, so that you can join for cheap prices.
Anyway, the hygienic standard is different than develop European countries or the USA for example. So be aware where to eat, and follow your personal body condition and practical mind.There are a wide range of restaurants all over Cambodia, and in the tourist cities Siem Reap and Phnom Penh, many international restaurants. You will find there everything you can expect: from Italian Restaurants to German restaurants and Indian restaurants or real American burgers eating places, and more. In the international restaurants is the hygienic standard mostly high and well prepared.
However, the local restaurants are a part of the culture and develop the economy, so this food can be from a good quality as well. The local dishes like: Khmer Curry, Amok, Lok Lak or Khmer noodles are pretty mild and served with rice or bread in all local restaurants and in the most international restaurants as well.
Consistently with these information: we sure that you will find the right place for a delicious meal without doubts.