If using wooden skewers, soak in water for 30 minutes before using.
To make the marinade: In a bowl, mix together all ingredients except the meat. Set aside.
Cut meat into thin slices (please see video).
Mix together the meat and the marinade making sure the marinade gets to every part of the meat. Cover and let it rest for 30 minutes.
Preheat oven to 400 degrees F. Thread the meat on skewers.
Place on a baking tray lined with aluminum foil and place in the pre-heated oven to cook for about 15-20 minutes. Half way through, turn skewers to the other side. This means one side will cook for about 7-10 minutes.
However, if you cut your meat a lot thinner than mine (as seen in the video) one side will cook for only about 5 minutes. It gets ready in no time! Avoid leaving the meat too long in the oven because it could become tough and hard to chew.
Remove, allow to rest and enjoy with some pepper sauce. You could also serve this with some roasted plantains.
Notes
Soya is basically marinated meat that is threaded on skewers and grilled. It is called Soya in Cameroon and Suya in Nigeria. Similar versions of it are called Kabobs or Beef Satay. In French, It is known as Les Brochettes. It is a popular street food in a number of African countries.