Step #1 Heat the oil over med-high heat in a large cast iron skillet.
Step #2 Add the beef, onions, & garlic & cook while stirring for 12-15 mins.
Step #3 mix the hot beef stock, with the tomato paste & the tamarind concentrate in a bowl & alow to stand until all of the tamarinf concentrate is disolved, approx.
Step #4 8-10 mins.
Step #5 Add this mixture to the beef as well as all of the other ingredients, reduce heat to low, cover & let simmer for 1 1/2 hrs.
Step #6 Be sure to stir occassionaly.
Step #7 Add stock as needed if the liquid reduces too much.
Step #8 Add the sugar & walnuts & let simmer for 15 more mins.
Step #9 --.
Enjoy the KHANOM MHO-GAENG PUAK - TARO CUSTARD. recipe