Crispy spiral curry puff with salted egg york filling

Recipe(12pcs)
Outer dough
All propose flour 160g(1+1/4cup)
Rice flour 1tbsp(8g)
Any vegetable oil2tbsp(30ml)
Cold water70ml(add little by little)
Sugar1tbsp
A pinch of salt
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Oily dough
All propose flour80g(1/2cup+2tbsp)
Vegetable oil 2tbsp
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Potato filling
Onion 1/4head
3-4shallots
Garlic 5-6cloves
Cooking oil/vegetable oil 1tbsp
1Potato (250g)
Curry powder1tsp
Sugar 2tsp
A pinch of salt
Pork/chicken seasoning powder 1/2tsp
Water 120ml
Milk 2tsp
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Salted egg york