She personally prefers to pan-fry them, she says.

Heinold spent a year studying Chinese at Peking University in 2001. He was assigned to a post in Beijing in 2008. And he has stayed, even though he has changed jobs several times.

He co-founded the Mexican cuisine restaurant chain Q Mex in 2014. Two years later, he and Cree decided to give pizza a Chinese twist.

"From soup baozi (guantangbao) to pan-fried baozi, I've tried all kinds of Chinese baozi, and it's been part of my breakfast for years," Heinold says.

To create the proper dough and fillings for baozza, Heinold invited traditional baozi masters, pizza chefs and German food scientists.

"For the dough, we change the flour and add different Italian herbs."

Heinold insists on a 50-50 ratio of dough and filling, which makes preventing explosions challenging. He also uses individual plastic wraps that help the baozza steam in the microwave.

The baozza and wrappers are handmade at a baozi factory in Yangzhou, Jiangsu province. Unlike traditional baozi, filling baozza requires two steps. First comes the sauce, and then comes the cheese.

There are five flavors-pepperoni, margherita, spinach-and-cheese, roast duck and barbecue chicken.

Heinold says the company is developing more flavors, including two that incorporate plant-based meat substitutes.

"We notice Chinese customers are more sensitive to black pepper in the spinach-and-cheese filling, which is a bit spicy for them, so we reduce the amount," Heinold says.

As baozza gains popularity on the Chinese mainland, the duo is exploring the Hong Kong and Singaporean markets.

They also plan to bring it to the United States.

Frozen pizza was an essential good for Americans during the pandemic that they often ran out of, Heinold says.

"So, we think this is actually a good time to bring baozza to the US."