The lemon, a bright yellow citrus fruit, is an essential ingredient in many kitchens. Originating in Valencia, this fruit is not only known for its refreshing flavor but also for its rich nutrients. Every 100 grams contains 22 calories and is an excellent source of vitamin C with 38.7 mg. It also provides small amounts of calcium, magnesium, and potassium, making it a healthy and nutritious food. The lemon is versatile and can be used in both desserts and savory dishes, enriching meals with its characteristic acidity. To maintain freshness, it is recommended to store in the refrigerator, away from other foods, which helps prolong its shelf life. Its use in baking is notable; for example, lemon cookies are a delicious option. To make them, mix 200 g of flour with a teaspoon of baking powder, 130 g of butter, 100 g of brown sugar, one egg, and the zest of a lemon. Bake at 180 degrees for 15 minutes and enjoy a fresh and tasty bite. Undoubtedly, the lemon is an indispensable ally in modern cooking.