The owner of Summerfield Bakery in Girrawheen, Mr Hong won first prize for his sausage rolls and third for his banana bread at the Baking Association of Australia competition.
His Riverton bakery of the same name won the banana bread category, placed second for sausage rolls and third for plain meat pies.
This was the first year he entered the competition and said he wanted to find out whether his products were up to judges' expectations.
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READ NOW"I felt very pleased that we could succeed and that our quality of produce is up to standards to allow us to achieve those trophies," he said.
"Our success is purely based on hard work and trying out new ways to make the goods by adjusting minor things can make a big difference."
Mr Hong said the bakery focused on quality, aiming to use the best ingredients possible, and shared his secret to making an award-winning sausage roll.
"A good sausage roll must have enough meat in the roll itself and plenty of flavour," he said.
"Our sausage rolls have lots of onions to enhance the flavour, consisting of real onions, not dried."
Mr Hong became a baker 14 years ago, after his family migrated to Australia.
"When I was younger our family could not afford much but after migrating to Australia, it created an opportunity for my family and me to have a better lifestyle," he said. "I want others to enjoy the quality food that I have experienced in Australia."
As well as sausage rolls and sweet treats, Mr Hong said the bakery's soft rolls were extremely popular.
"Many of our customers have come to our store from many kilometres away just to buy our soft rolls; kids specially love our rolls as they have a hint of sweetness," he said.
Mr Hong will be hoping to add more trophies to his collection when he competes at the Perth Royal Show later this year.