Heat a little olive oil in a frying pan over high heat, then add the chopped onion and pepper and cook until it starts to soften. Stir in the minced garlic, then add the beef mince and season with 1½ teaspoons peri-peri seasoning, 1½ teaspoons smoked paprika, 1 teaspoon garlic granules, and black pepper and salt to taste, and cook, stirring occasionally, until the meat is fully browned.