PROBLEM TO BE SOLVED: To efficiently extract an active ingredient contained in a plant in genus momordica, and enhance the amount and quality of the active ingredient.SOLUTION: A plant in genus momordica is cultivated by performing flower thinning or disbudding. More specifically, by raising bitter melon while removing buds and flowers, nutrient components are aggregated in leaf portions. The plant in genus momordica cultivated in this manner contains high level of nutrient components. Particularly in processing the plant into a food product or the like, a large amount of the nutrient components can be taken from a small amount of the food product.
