Put 1.5 kg of rapeseed oil in a pot and heat it to 270°C

add a piece of ginger, remove the pot from the fire, reduce the oil temperature to 240°C, pour 200 grams of hot oil on the spices (3 grams each of cinnamon and sagebrush, pat 2 broken strawberries, 3 star anises, 3 fragrant leaves, 1 mangosteen) and scald until fragrant