What's not to like? Ground beef and not much else - no garlic, no tomatoes, no spices, no funny stuff whatsoever. Add the toppings of your choice and you're in business.
500 g lean ground beef
1/2 medium onion, chopped
3/4 cup beef or chicken broth, (or water)
1 tsp mustard
1/2 tsp salt
1/4 tsp black pepper
4 hamburger buns
Crumble the ground beef into a large skillet.
Add the chopped onion and cook, stirring, over medium-high heat until meat is no longer pink.
Add the broth, mustard, salt and pepper, lower the heat to medium-low and continue to cook, stirring once in a while, until most of the liquid has evaporated - 10 to 15 minutes.
To serve: Spoon Loosemeat mixture onto split hamburger buns. Top with sliced pickles, chopped onion, mustard, ketchup or whatever you like. In Iowa, I understand the pickles are mandatory but everything else is optional.