Ginjinha is a traditional Portuguese liqueur made from sour cherries, sugar, and alcohol. It is a popular drink in Porto, especially in the historic neighborhood of Ribeira. The cherries are soaked in alcohol for several months, resulting in a sweet and fruity flavor. Ginjinha is typically served in small chocolate cups and can be enjoyed straight or with a cherry at the bottom. It is a delightful and refreshing drink, perfect for sipping while exploring the charming streets of Porto.