To provide a novel method for producing soymilk protein aggregate by using honey.SOLUTION: Provided are: a method for producing a soymilk protein aggregate, including a step of aggregating protein contained in soymilk by mixing soymilk and honey; and, by observing the aggregation behavior of soymilk protein in said method for producing the soymilk protein aggregate, a method for determining gluconic acid content and sugar content in honey.SELECTED DRAWING: Figure 1

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