Porto Tonic is a refreshing cocktail that combines the flavors of port wine and tonic water. It is a popular drink in Lisbon, especially during the summer months. The sweetness and richness of the port wine pairs perfectly with the bitterness and effervescence of the tonic water. The cocktail is typically garnished with a slice of lemon or a sprig of mint, adding a fresh and citrusy aroma. Whether you enjoy it as an aperitif or a post-dinner drink, Porto Tonic is a great choice in Lisbon.