Does the jewish people believe in the same god as muslim? and where does it ever written that muslim can also eat kosher food?
Jews believe in the same God as Muslims, although they associate some ideas with Him that we consider incorrect. God says in the Hebrew Bible that He is “married to Israel”, so they believe Jews are almost a separate species with a special relationship with God.
The Quran says the food of the People of the Book (Jews and Christians) is halal to Muslims (verse 5:5). But since Christians do not follow Biblical laws on food, today this only applies to Jews. Jews mention God’s name before slaughtering an animal like Islam requires and consider pork and blood forbidden similar to Muslims, so anything certified kosher is halal (except alcohol).