In a large bowl, combine the ground beef, ground lamb, minced garlic, finely chopped onion, paprika, baking soda, salt, black pepper, and cayenne pepper (if using).
Add the olive oil and water, and mix thoroughly until the ingredients are well combined.
With wet hands, shape the mixture into small sausages, about 3-4 inches long and 1/2 inch in diameter.
Preheat your grill or a skillet over medium-high heat.
Grill or cook the Čevapi for about 8-10 minutes, turning occasionally, until they are well browned and cooked through.
Enjoy your meal!