Eggs being carefully placed by three fingers in the empty pockets of the tray made of paper

eggs eggshell egg white hen scrambled eggs yolk protein hardboiled poultry fertilization incubation selenium egg cell vitamin b2 embryo chicken zinc baking dozen b12 cake nutrients bread zygote boiled shell albumen food hatch nutritional value vitamin d cholesterol cooking breakfast fat dinner salmonella meal whole white bird b6 contamination healthy allergy nutritious tray sunnysideup rooster