Remove shells and devein shrimp. Then wash in cold water and set aside.
Cut the tomatoes into 16 pieces and set aside.
Add all other ingredients into a bowl (except oil), mix then add 1 cup water and mix again.
Heat oil in a pan/pot, add mixture and stir for 3-5 minutes. Add water and continue stirring for another 4-5 minutes.
Add tomatoes and shrimp and continue stirring for 3 minutes.
Cover and remove from fire. Let this stand for 5 minutes.
Serve with rice or roti