There is no effective alternative to making these koftas other than getting stuck into mixing the ground meats and other ingredients with your hands. If you feel squeamish about doing that, use rubber gloves. As a last resort you can use a wooden spoon but it will take a long time to get the ingredients well distributed and mixed.
Chop the onion untill it is mushy. I don't use bread or an egg as a binder for the koftas so if the onion is too coarse, the ground meat may break up. ( if you have an onion chopper or small food blender that would help)
In a medium sized bowl, mix the chopped onions, garlic and ground meats until they are evenly distributed.
Add the spices and mix thoroughly.
With damp hands, divide the meat into 10 equal pieces and roll into long patties about 3 inch long and an inch thick ( they will shrink) .
In a slightly oiled non stick pan or skillet cook patties on a medium heat for 10 minutes.
During the last couple of minutes, brush patties with pomegranate syrup and continue cooking and turnining occasionally till glazed and rich brown in color.