Savory Beef and Bean Chili

Ingredients

• 1 kg lean ground beef
• 1 cup dry black beans, soaked overnight and drained
• 1 cup dry red kidney beans, soaked overnight and drained
• 8 beefsteak tomatoes, diced
• 2 sweet peppers, diced
• 2 stalks celery, diced
• 2 tablespoons olive oil
• 1 yellow onions, diced
• 4 cloves fresh garlic, minced
• 2 tablespoons chili powder
• 1 teaspoon ground cumin
• 1/2 teaspoon red pepper flakes
• 1 teaspoon paprika
• 1 teaspoon salt
• 1/2 teaspoon ground black pepper
• 4 cups beef stock