Have the freshest ingredients that you've made yourself. A healthier way to create mince, where you know exactly what has been added. Make your own sausages (cases should be purchased before - available from most butchers).
Electric home meat grinders and small manual grinders are intended for processing relatively small quantities. Meat needs to be cut into relatively small chunks, and gristle should be removed. With most electric models, you must remove the knife and plate to clear clogs, with others you can turn the worm in reverse.