In today's catering service industry, monosodium glutamate is widely used as a condiment. Especially in hotel catering, monosodium glutamate is often used as seasoning. The use of monosodium glutamate can increase the flavor of dishes and improve the taste and quality of dishes.

There are no specific regulations or restrictions on whether five-star hotels can use monosodium glutamate. In fact, most five-star hotels use monosodium glutamate to improve the taste and quality of dishes. However, when using monosodium glutamate in five-star hotels, it will be added appropriately according to the actual situation to meet the hygiene standards and the taste needs of customers.