Sweet and Sour Beer Battered Fish

Sweet and sour sauce:
1 small green capsicum diced
1 small red capsicum diced
1 450g can pineapple in syrup (strained, keep the syrup to add to the sauce)
1 onion diced
4 tomatoes diced
3-4 tablespoons of oyster sauce.
2 tablespoons of corn flour
ginger cut into thin strips

Some oil in pan, pop the onion in then the tomatoes. 
Once the tomatoes have softened add the pineapple, capsicum, ginger in. 
Slowly add the syrup in while tasting. I used most of the syrup today. 
Then oyster sauce to taste.
Dissolve 2 tablespoons of corn flour in some cold water..add to sauce to thicken once the sauce is boiling. 

Batter:
1 and a 1/2 cups of plain flour
1/2 cup of corn flour
1 stubby of beer (375ml) 
1 egg beaten
sprinkle of mixed herb
sprinkle of salt and pepper

After making the batter let it sit for about 30 minutes

Cut the flathead tails into bite size..3cm pieces then pop in batter and deep fry.