Michael Sin is a specialist commercial kitchen consultant for several large hotels and polytechnics around New Zealand. He has designed the commercial kitchen for the Pan Pacific Hotel (now the Rendezvous Hotel), the Regent Hotel (now the Stamford Plaza), the Rydges Hotel, the Aotea Centre, the Royal New Zealand Airforce in Blenheim, Auckland University of Technology School of Catering and Hospitality, Whangarei Polytechnic and Waikato Polytechnic.
He designed the cook chill lab, production kitchen, asian food kitchen, all electric induction cooking kitchen, bakeries, garde manger, chocolate kitchen and pizzerias. He has also introduced the use of mobile cook chill regethermic carts which heats food and stores them while it delivers food to hospital wards.