If you 'just believe' the proposition that kosher law is about food you have violated the deeper implications of the law by eating the flesh, adopting the teaching, of people that do not ruminate.
It literally makes no sense and if you allow any thought that makes no sense take root in your mind it will screw up your entire thought processes and consequently your perception of everything from good and evil to right and wrong causing you to injure yourself and the people you love by perverting and desecrating your knowledge of God, love for Jesus, and experience of life itself.
When Jesus said,"eat my flesh", he was presenting this exact same dilemma. Which way to understand and apply the Law is the only right way to do it that fulfills the promise of eternal life.
This is my flesh, the fruit of my mind, pleasing to the eye and good to eat. Chew it over, eat it, and you will be satisfied, restored to a right mind, and you will live. Perhaps for the first time in your life.