Food

In the wild, hamsters would live on mainly seeds and nut, some green vegetables, and occasionally grubs and insects. However not many hamster owners will be keen on giving their hamster some insects to chew on, but hamster mix bought from any pet shop will be fine, along with some vegetables every day or two. Some of these are:

apple banana beansprouts broccoli cabbage carrot clover cauliflower (leaves and stalk) celery chicken (cooked) cucumber dandilion egg grapes

kiwi fruit lettuce (small amounts only, not iceberg) nuts parsley pasta peach pear peas plum (not stone) potato (cooked) rice strawberries swede sweet corn

Never feed your hamster on any citrus fruits; oranges, limes, lemons etc.
A syrian or golden hamster will eat, on average, about a tablespoon of hamster mix, when feeding your hamster on fresh fruit and vegetables make sure to dispose of it before it goes rotten, this is even more important with nuts, as when the rot they can give off toxic fumes.
Always make sure that your hamster has a continous supply of fresh water as the can dehydrate quickly and become very ill and possibly die!