01 - 
                Heat tomato ketchup in a saucepan over medium-low heat until just warmed through.
              
              
              
                02 - 
                Add baking powder to the warm ketchup, stirring continuously until fully dissolved.
              
              
              
                03 - 
                Reduce the heat, then add curry powder, smoked paprika, cayenne pepper, and onion powder. Mix thoroughly to combine.
              
              
              
                04 - 
                Stir in beef stock, water, and Worcestershire sauce. Simmer gently for 10 minutes to develop flavor, stirring occasionally.
              
              
              
                05 - 
                Fry or grill bratwursts over medium heat for 10 to 15 minutes, turning as needed, until thoroughly cooked and well browned.
              
              
              
                06 - 
                Slice the bratwursts, arrange them on a platter, and generously cover with currywurst sauce. Serve immediately with classic sides such as fries or a bread roll.