Tuna with onions is a gastronomic option that stands out for its flavor and nutritional benefits. This dish consists of 50% tuna, 43% onion, 4% white wine, 1% garlic, 1% extra virgin olive oil, and 0.85% salt, offering a healthy and delicious mix. Being a blue fish, tuna is rich in unsaturated fats, known as "good fats" that promote cardiovascular health. The product has a net weight of 300 grams and a price of 22.97 €/kg. It is important to keep it refrigerated at a maximum temperature of 4ºC to ensure the quality and food safety of the product. It is recommended to consume it as part of a balanced and varied diet to gain all its benefits.