1. Soak the pine nuts in water for an hour, then put them in a steamer and steam them over normal fire for 30 minutes. Then take them out and put them in a ventilated place to air-dry. Then put the dried pine nuts in a wok over low heat. Dry fry until most of them are open and ready to serve.

2. Put the yellow sand into the pot and stir-fry until it is dry and hot. Then pour in the sugar water and stir-fry evenly. When the sugar smoke just comes out, add the pine nuts and stir-fry continuously. After five or six minutes, take out a few pine nuts. Crush it open. If the kernels turn yellow, they are cooked. Sieve the sand and let them dry.

3. Soak and grind the pine nuts in water and then steam them at high temperature. The temperature should be controlled at about 100 degrees for more than 30 minutes. Then continue to fry in the wok for more than ten minutes.

4. Bake the pine nuts in a micro-boiler for 5 minutes. After cooling slightly, bake them for 6 minutes. Take them out and put them into cold water while they are hot. After the water is dry, roast them in a micro-boiler for 3 minutes. Be careful not to set the fire too high, otherwise it will burn easily.