Today i spent about 4hours to make this soft and yummy Polo buns, using the method of "gelatinised starch". The study said starch gelatinisation take places when heat and moisture is applied to a starch, gelatinised startches absorb more water than untreated starch, thus resulted softer bread.
This also remind me of the
Polo bun i took during my trip to Hong Kong and the taste is not much difference from my homemade Polo bun.