Question Is it o.k. if I eat bread when abroad? I mean all kinds of bread that's sold locally in supermarkets used and baked by non-jews?
Answer Not unless hechsher on the product. Word down below for more info.
Grains and cereals
Unprocessed grains and cereals are kosher. Processed items (e.g. dry cereals, baked goods) often contain small quantities of non-kosher ingredients. As such Orthodox Judaism holds that these goods should generally not be consumed unless there is a hechsher (mark of rabbinical certification of kashrut) on the product. Conservative Judaism often is more lenient, and holds that a careful reading of the ingredients is sufficient.
During the 8 days of Passover there are additional restrictions on what foods may be eaten. Jewish law forbids Jews from eating any leavened or possibly leavened product made from wheat, rye, barley, spelt, or oats.
Found at www.nationmaster.com/encyclopedia/Kashrut
