"I want to buy a house for when I get older so I won't have to go flatting, and for security for my future," he told the Times-Age.
His gran prompted him to start the business one day when he asked if he could bake something special as he loved cooking, Thorin said.
"I've always enjoyed baking and with the help of my gran it became both our idea. I've always loved cooking and gran has always loved chocolate but it had to have a point of difference. That's the flavours. Adding fruits and nuts is how we got started."
He has regular customers too.
"I love meeting new people."
As for the future, he looks sure to make his name as an entrepreneur.
"Time will tell," he said.
But his gran, Marion Williams, said he would definitely be going places.
An advertising magnet reading "Thorin's Treat" is plastered across her car.
"He does it all himself. He's a real toiler. He helps everyone with everything. He has a good vision for the future of the business too. His main focus is to get himself a caravan.
"He's been trying to work out where the tow bar will go on my car. He is desperate to do that."
At Christmas his treats were extremely popular with bulk orders arriving daily and Thorin takes orders for special occasions like christenings and birthdays.
A food technician from Auckland also helps him.
"It's trial and error some days but he's quite tight on things.
"He doesn't eat any of the stock ... he's a very sensible young man."
Professionals print Thorin's labels for the chocolates.
If you would like to make contact with Thorin or place a bulk order please email him thorin54@learn-now.school.nz or thorinstreats@xtra.co.nz.