Over medium high heat heat oil in a large skillet. Add the onions, garlic, and hibiscus. Sauté, stirring often until onions softened, about 5 minutes. Add cumin and oregano, brown sugar, and tomato paste, stir and continue to sauté another 2 minutes. Add beef broth, stir, reduce heat and simmer for 5 minutes. Remove from heat, allow to cool for 10 minutes.