Vietnamese Chicken Curry without carrot

1 1/2 kg chicken pieces 4 teaspoons oil 2 medium onions , quartered 2 garlic cloves , crushed 1 small red chile , finely chopped 4 tablespoons finely chopped[...]

2 medium potatoes , cut into chunks oil (for frying) 6 shallots , finely chopped 4 stalks lemongrass , finely chopped 2 cloves garlic , minced 2 red chilies ,[...]