Hu's popular recipes include chestnut cake. She believes homemade pastries not only taste more delicious but are also good for growing children's health. [Photo by Xu Lin / China Daily]

She says homemade pastries not only use better ingredients but are fresher than pastries served in a bakery. For example, cakes for sale are sometimes frozen to preserve them. They taste similar to fresh ones after thawing, but lose some nutritional value.

She has prepared dozens of recipes for class such as tiramisu, chiffon cake and butter biscuits.

The recipes Hu hands out in classes come from baking books she bought abroad. After translating a recipe into Chinese, she will experiment and adjust it so the procedure also works well in a domestic electric oven, which is different from a big commercial oven in a bakery or hotel.

She says many baking classes fall into a do-it-yourself pattern.

Students just follow step-by-step while the teacher demonstrates how to bake, and all go home happily with pastries they've made themselves.

"You will miss something the teacher says if you do that because you're not concentrating. You may not remember the steps the next time you want to make the same pastry," she says.

Hu uses the teaching method she received when she was studying for her two-year diploma of pastry and bakery at the Singapore Hotel and Tourism Education Center. Students have to observe carefully how she bakes and make their own pastry when they go home. She shares her successes and failures and answers their questions in class.

"Hu teaches very well," says one of her students Lin Yuan, 40, another stay-at-home mom in Beijing.

"My pastries are very popular among my family and friends. Now I often bring a homemade cake to my friend's house as a gift."

Baking not only helps Hu share the same hobby with many friends. It's an important way for her to interact with her 4-year-old son Zhang Junxi Ryan. He often helps her do simple work such as sieving flour and whipping dough, and watches her bake with interest.

"It's a lot of fun! My favorite is chocolate cake made by mom," says the boy, with chocolate smears around his mouth and a slice of cake in his hand.

When he comes back from kindergarten at 3:30 pm, he can instantly judge what kind of cake or bread his mom has prepared by its aroma.

"Moms should bake at home as much as possible," Hu says, "not only because of food security, but also that the joys you share with your kid is priceless. This kind of coziness at home is very good for the kid's growth."