The residue on the cake is meat. According to the query of relevant public information: the dregs of the slag cakes are made from pork. The shape of the slag cakes is different from the common prototype shaobings. Most of them are square and flat. The slag cakes are finely made and easy to carry. They are deeply loved by the majority of people. People who like to eat slag sesame cake not only because of its compelling aroma and attractive golden appearance, but also because it tastes crispy and delicious, charred on the outside and soft on the inside, full of toughness, oily but not greasy.