Plum blossom cake, crab apple cake, stinky tofu, pan-fried pancake, red bean cake, maltose crab shell roe: shortbread made of fermented flour and filled with skin and filling.

The finished product is brownish-yellow in color and tastes crisp, loose and fragrant. The color and shape of the cake resembles a cooked crab shell.

Crab shell yellow is named after its round shape and yellow color that resembles a crab shell.

Crab shell yellow is made from pastry and fermented dough. It is first made into a flat round cake, dipped in a layer of sesame seeds, and baked on the wall of the oven.

This cake is delicious, salty and sweet, with crispy skin.

Someone wrote a poem praising it: "I smell the aroma before I see the bakery, and the puff pastry comes out of my mouth one after another."

Crab shell yellow fillings are available in either salty or sweet varieties.

The salty ones include scallion oil, fresh meat, crab powder, shrimp, etc. The sweet ones include sugar, rose, bean paste, jujube paste and other varieties.

In the early days, most of the teahouses and Laohuzao (boiled water specialty stores) stores in Shanghai were equipped with a vertical drying cylinder and a flat-bottomed frying pan stove. They sold two snacks while making them - crab shell roe and fried steamed buns.