Many people assume that Halal and Kosher are the same thing. They are mistaken! If a product is Kosher certified, it does not mean the product is automatically Halal. The Kosher process differs from what is allowable by the Islamic Shari'a. For example, there are Kosher wines and alcohol but this is not permissible or acceptable for Halal foods. Another example of the difference between Halal and Kosher are slaughter procedures. For Halal meat and poultry processing, the Muslim slaughterman is required to acknowledge God's Creation and to thank God for providing sustenance by stating a prayer before each and every slaughter. Muslim slaughtermen invoke God's name before each and every slaughter with the statement, ?In the name of God ? God is the Greatest/Bismillahi Allahu Akbar.? The Shochet, or Jewish slaughterman, does not and is not required to invoke God's name on each animal before each slaughter. With Halal slaughtering, the entire carcas is utilized. With Kosher slaughtering, only the front four-quarter of the beef carcass is utilized. The Kosher hind quarters cannot be considered Halal as the Shochet does not adhere to Islamic Law and Halal guidelines and does not pronounce the name of God before each slaughter. Within the meat industry, some companies and distributors attempt to claim or purport Kosher hind quarters to be sold as "Halal" beef. Within Islam, Kosher slaughtering and handling is respected and industry is responsible to understand the guidelines and differences between Halal slaughter, invoking God's name before each slaughter, and traditional Kosher slaughter rites and not mislead consumers.
Simply put, Halal and Kosher are similar but yet as different as "vegetarian" and "vegan." However, it is a fact in some situations and circumstances, Kosher consumers accept Halal and some Halal consumers may accept Kosher.
So really it depends ho closely the peson adheres to their religion as to wether they could (as a muslim) consume Kosher meat and vice versa.