15 to 3 minutes. According to the official website in the kitchen, the thickness of the steamed wax gourd will directly affect the minutes of steaming. Thin slices can be steamed in 15 minutes, while thick slices can be steamed in 3 minutes, so it takes 15 to 3 minutes to steam the wax gourd. Wax gourd is an annual creeping or scaffolding herb belonging to the genus Wax gourd in Cucurbitaceae. It is a warm-loving, heat-resistant and short-day plant, with developed root system, strong ability to absorb soil moisture, drought tolerance and strong adaptability.