Gum tooth jelly, also known as flower jelly, is semi-solid maltose made from glutinous rice and wheat. The finished product is brown in color, fragrant in smell and strong in viscosity. It is a must-have snack for children in the Song Dynasty and a must-have dessert for people in the Song Dynasty on New Year's Eve.

Maltose is a kind of sugar food made by fermenting rice, barley, corn and other grains. Adding proper amount when cooking will increase the color and fragrance of dishes. Maltose is sweet and warm, and has a certain therapeutic effect. Proper consumption of maltose can play a role in moistening lung and relieving cough, strengthening spleen and nourishing stomach, moistening intestine and relaxing bowels, and resisting bacteria and expelling toxin.