What is the chemical formula for zinc phosphate? znzp2 zn(po) zn3( zn(no3)2

Bernard is an excellent chef. however, his beef steak did not turn out well. bernard forgot that steak is tender and has less collagen, and he used the wrong cooking technique. which is the correct technique that bernard should have used? this subject is actually home ec they didnt have it when i had to pick so i chose anyone .