1Add all sauce ingredients into a pot and bring to a boil. Allow to simmer for 10-15 minutes.
2Add 2 tbsp olive oil into a frying pan. Add chopped onion, sweet peppers and 1 dash of salt. Fry until onions begin to caramelize.
3Mix ground turkey, ground pork and 1 egg into a bowl. Mix well. Add fried onion and peppers into bowl and mix. Add corn flour (to thicken)and mix. Form thin burger patties and place onto plates.Add cheese (as desired) onto patty and place another patty on top. Pinch edges to secure cheese inside.
add 2 tbsp olive oil into a pan.
4Sear burgers on both sides. Then pour sauce made into pan and simmer until cooked.