Place ingredients in a saucepan over medium high heat. Simmer for 5-6 minutes or until thickened slightly.
Meatballs
Place the breadcrumbs and a 1/4 cup of the chicken stock into a small bowl. Mix and allow to soak for a minute until softened.
In another bowl place the remaining ingredients and 3 tablespoons of the marinade. Add the softened breadcrumbs and mix until just combined. Try not to over mix, as the more yo mix, the tougher the meatballs will be. Roll into golf ball sized meatballs.
Heat the vegetable oil in a nonstick frypan over medium heat. add the meatballs and cook, turning occasionally, for 3-4 minutes or until golden brown. Set the meatballs aside.
Add the remaining marinade and the meatballs back into the pan. Turn down and simmer until the sauce and the meatballs are warm. Serve a meatball either inside a lettuce leaf and sliced cucumber and sliced tomato.