Start your braai until you have low to medium hot coals.
For the Curry Mixture: While your coals are reaching its desired temperature, you can start making a curry mixture. In a large bowl, dissolve the curry powder, mustard, ginger, garlic, brown sugar, vinegar and 500ml hot water. Set aside.
Heat the oil in your pot and fry onion for +-4 minutes, or until soft.
Add the beef and a small quantity of curry mixture and braise till meat starts to colour. Give your pot a good stir using your Wooden Spoon.
Add the cayenne pepper, rosemary, thyme and parsley.
Add potatoes, butternut, carrots and baby marrow to your pot and the rest of the curry mixture. Add the remaining water to keep your pot from drying out and cook till the vegetables start to soften. Add salt and pepper to taste, stir well, cover with the lid and simmer for +- 1 hour and 30 minutes.
Add the tomato and instant curry soup powder to thicken the potjie mixture, cook for +-10 minutes and serve on a bed of rice.