Yes, add some lard to soak multiple sources, which is crisp and bulky, and it will not harden when it is cold. The baking method of crispy thousand-layer cake: add 5 kg of heated lard (or ghee) into 10 kg of low-gluten flour, 50 g of edible salt and 0.5- 1 kg of sugar, dissolve it in a little water to make crispy noodles, let it stand for 1-2 hours, pull it into small balls, and roll it into crispy dough. In addition, take 12 kg medium-gluten flour, add 60 g foam source, dry mix evenly, then add 1.8 kg lard or ghee, 3 kg warm water, 60- 120 g salt (1.8-2.4 kg sugar to add sweet shortcake) to make it.