Divided into five steps:

Wash the soybeans with water, and then soak them in water for about three hours, until the soybeans are soaked.

Pot of water, add soaked soybeans, the amount of water to more than soybeans, and then open the fire to cook, cook to eight mature when you can fish out the soybeans.

The fishing out of the soybean spread cool in the dustbin, and then the soybean after the flat evenly sprinkled on top of the flour, to a higher temperature, and humid place, in the soybean on top of the cover some bamboo leaves is ideal. After more than ten days or so, and then look at the soybean on the birth of a layer of white hairs, then you can transfer the dustpan to the sun for exposure, and so dry, the white hairs upside down, you can prepare to do the sauce.

Put the processed soybean in a tile container, and then salt, anise and pepper and other seasonings to mix, then you can cut the watermelon, take out the inside of the red flesh of the melon, put into the soybean seasoned, try to smash the flesh of the melon so that it is in full contact with the soybean.

After adding the watermelon, move the container with the watermelon sauce to the sunlight for a month, and the watermelon sauce will be ready.

Raw materials and preparation:

2.5 kg of good soybeans, 200 grams of peppercorns, 100 grams of fennel, 50 grams of cinnamon, 50 grams of cinnamon seeds, 2.5 kg of red flesh watermelon, 0.5 kg of ginger, 2 kilograms of salt according to the taste of the lightness of the weight of the increase or decrease.

Pepper, deseeded fennel according to the petal break, cinnamon rolled into pieces, all kinds of spices bumped off the dust and debris were put into an iron pot, frying out the flavor. Prepare ginger moderate amount, cut into julienne spare.

The red flesh of the watermelon cut, digging the flesh in the basin, with the hands of the crushed, and will be ready to put the salt, according to taste increase or decrease, will be fried spices poured into the basin, stirred evenly covered with gauze, in the sun for three days, pay attention to fly prevention.

The soybean amalgamation in the water soaked for 12 hours, fished out into the pot, not too full of water, water and beans flush, on the steamer for 2 hours until the beans are rotten, dripping out of the remaining water, the beans into the sun-dried melon water gently stirred.