You can count on these fast-food restaurants to serve you the freshest beef, thanks to their "fresh, never frozen" burger policy.

No mystery meat here! Order a burger from any one of these fast-food giants and you're sure to find pure beef burger patties.

Ground beef can also be frozen for up to four months. When you're ready to have burgers again, "the best way to defrost ground beef bricks is in the refrigerator for 24 hours," he adds.

What makes a good burger? Is it the patty, bun, toppings, or a combination? We rank the top burgers across Hong Kong ...