Ingredients :

• Beef bratwurst sausages — This is the foundation. Look for 100% beef bratwursts at your butcher or supermarket — some brands do this very well. Avoid sausages that are too thin or too dry; you want volume and bite. If you find some with spices like marjoram or nutmeg, take them without hesitation.
• Onions — One large yellow onion is enough for six sausages. It will cook in two stages: first it softens in the broth, then it finishes caramelizing gently. No need to slice it too thin — large half-moons are good, they hold up better during cooking.
• Chicken broth — Here it replaces the traditional beer. Its role: to keep the sausages juicy during simmering and to give a savory base to the onions. A cube dissolved in hot water works very well. Beef broth brings a more pronounced taste if you prefer.
• Soft buns — The bun is often overlooked, which is a mistake. Choose something soft, slightly brioche-like. Bakery hot dog buns are ideal. If you spend 30 seconds on the grill cut-side down, it’s another level — they become slightly crispy and won’t get soggy.