All Jews who believe in God and Torah may be presumed to keep kosher, and it is permitted to eat in their home as long as two conditions are met. First, the homeowner must know the details of the kosher laws. Second, they must take them seriously. Someone who is being hosted by a fellow Jew who does not keep kosher must arrange in advance for the host to buy kosher food and use disposable dishes. (If a person does not keep kosher, the dishes are not kosher either.)