Sear (sangkutsa) Liempo meat in a sautee pan (my favorite Esteele Pan).
"Sangkutsa", means half - cooking meat in high heat without oil just to seal moisture.

Seat aside/remove meat from pan. Put in a separate bowl.

Sautee in olive oil onions and tomatoes. Drop onions first until translucent in color, then the tomatoes until soft. Don't burn as it will make the soup taste bitter.

Put back the meat on the sauteed mixture of onions and tomatoes. Continue sauteeing altogether for about 5 mins

In a tefal pressure cooker transfer the sauteed meat.

Add rice water and let it boil.

Once boiling add the sinigang mix and knorr cubes. Mix ingredients and cover the pressure cooker (close the steam valve). Continue to boil for approximately 30 mins.

Add okra and siling haba. Boil for 3 mins.

Finally add kangkong. At this point close stove. The heat of the soup is enough to cook the kangkong.

Season to taste with Patis.

Serve hot.