The grams of a spoonful of custard are related to the size and depth of the spoon. Different spoons have different capacities, so the grams they hold will be different. Generally speaking, a spoonful of egg soup is about 15-20g. In China's daily family, the commonly used spoon is about a soup spoon or a dinner spoon. Of course, if you need more accurate values, you'd better use a scale to make specific measurements.