Most people assume that Yeshua (Jesus) has nothing to do with being kosher, but that's not true. Yeshua is the most Jewish of Jews: He was born in Israel to a Jewish mother from King David's royal family. He was circumcised on the eighth day. He was a rabbi who did unparalleled miracles that brought great blessing to the nation of Israel. He taught that He fulfilled, not set aside, the Torah.
Even though He died 2000 years ago, Yeshua was raised from the dead; He returned to life and overcame death! He is the Messiah of Israel and the Savior of the world. He is the coming world ruler and mankind's only hope. He is the only one who can make us kosher (clean, fit, proper) in God's sight because He is completely kosher in the eyes of God. He alone is the one who can enable both Jews and Gentiles to have a kosher relationship with God, and with one another. Only Yeshua can give genuine peace and joy in this life, and everlasting life in the world to come.