Convert syrup

As we're all busy making mooncakes, I'm starting to get excited, and last year I learned to make pasta with a teacher with decades of experience at Zhengzhou's sweet restaurant, which includes traditional ways of making mooncakes, which husband eats, which he hasn't tasted for years, which is simple. Now follow me from the beginning! First of all, transformation syrup, there's a lot of methods on the Internet, but there's more to fire and time, and this is a lot easier for my teacher。