Francisco Oliveira, the Portuguese founder of bakery brand Santa Nata, was reminded of home when he tried Hong Kong’s iconic pineapple bun for the first time. “When I ate the pineapple bun, I immediately thought of the pao de deus,” he says, referring to a popular Portuguese baked treat he has eaten since childhood. Translated as “bread of God”, pao de deus is a brioche found in pastry shops across Portugal. It is generously slathered with sugar and coconut before baking to create a golden,...