1、 Conventional yellowing method

1. Sunlight: the green gourd will turn yellow after the sunlight. Therefore, you can turn it yellow by drying it in a place with sufficient light. However, because it is not resistant to strong light exposure, you can't choose a place with direct sunlight to dry it. You'd better choose a place with scattered and soft sunlight to dry it. In this way, it can turn yellow in about 15-20 days

2. Keep it ventilated: put it in a well ventilated place and let the wind gently dry it. This also makes its surface yellow. The advantage of this method is that it can keep the gourd in its original shape as much as possible, but the disadvantage is that it is very slow. Generally, it takes about a year for it to turn yellow completely

2、 Rapid yellowing method

If you want to make the surface of the gourd turn yellow quickly, you can bake its surface seedlings and dry the water in it by using tools such as oven and oven. In this way, it can turn yellow in less than a day. However, special attention should be paid to controlling the heat when baking. You can't bake with a large fire, otherwise it's easy to crack or burn the gourd