Same method of slaughtering an animal I believe for Hallal meat.
General rules as follows:
- Prepared in a Kosher kitchen according to strict standards.
- Animal has to be slaughtered in the "kosher" way.
- Beef and lamb ok - pork, etc forbidden.
- Fish with scales ok - no shellfish or sea creatures without scales.
- Dairy products ok but cannot mix dairy with milk.
- Various others....
Only the more religiously observant will require the kosher certification.