The red onion, native to Spain, is an essential ingredient in Mediterranean cuisine. It is recommended to consume it raw, as this preserves its nutritional properties to the fullest. This variety stands out for its flavor and versatility, being ideal for salads, sauces, and as a side in many dishes. Besides its delicious flavor, red onion offers numerous nutritional benefits. It is rich in vitamins A, B1, C, and E, as well as minerals and folic acid. Its tonic, diuretic, and purifying properties make it an ally for digestive health. For those looking for a natural remedy, mixing its juice with lemon and honey and taking it warm can help alleviate coughs and colds. It is advisable to store red onions in a cool, dry place, away from light and out of the refrigerator, to maintain their freshness and flavor. A practical tip to avoid eye irritation when cutting them is to place them in the freezer for 10 minutes beforehand, although they shouldn’t be left too long to avoid losing their aroma. Undoubtedly, the red onion is a versatile food that should not be missing from a balanced diet.