Dry soybeans were soaked in water three hours in advance.
Pig's trotters can be plucked with fire, and then the burnt ash can be washed away. Boil cold water in the pot until the water boils, skim off the floating foam and rinse with cold water (ice water is better, so cold and hot make the skin more Q).
Stir-fry the sugar color: low heat, a little base oil, add 50g of rock sugar. When the sugar color is dark, pour the cooked pig's trotters into the pot and stir-fry the sugar color quickly, keep the temperature for three minutes, and wrap the color thick. Add a little white wine and soy sauce, stir-fry for a while, and the color will be good.
Pour water without trotters into the pressure cooker, add trotters and soybeans, add a spoonful of salt (taste appropriate), add a little cinnamon star anise, and press for 25 minutes.
Pour everything into the pot that has just been fried with sugar and collect the juice over high fire. Every pig's trotters are wrapped in thick sauce.