Genshin Impact location spot to obtain cooking ingredient, you can found it from plant, ground river or from animal.
1 - Sweet Flower.
From the screenshot are the recomemded location spot that you can obtain the most Sweet Flower, and you can also purchase it from NPC Flora in Mondstadt for 200 Mora each, you can purchase up to a limited number x10 that will be reset in a certain period of time.