This recipe is a good demonstration of how a combination of salt and MSG increases umami, decreases sodium, and makes food taste even better.
In a bowl, mix beef, oregano, garlic, fennel seed, onion powder, red pepper flakes, salt/MSG mixture, and black pepper until the mixture becomes elastic. Form 4 burgers.
Cook burgers on the grill or in a sauté pan until completely cooked through. They should not be red or pink in the middle when done.
Serve on focaccia that has been coated with spicy pesto. Serve with radicchio, arugula, tomatoes, red onion, and basil leaves so that your guests can personalize their burgers.