What is in the middle of a cricket ball?

In the middle of a Golf ball used to be a bouncy ball with rubber bands and liquid. Now of days in it you will find a bad stink white substince almost liquid. But please dont try and eat it or anything lol.... there you have it! P.S. Yes, i have tried to cut open a golf ball mainly dont do it E-mail me at some1tokemyname@aol.com