Porto, Portugal
Porto's contribution to the aperitif tradition — white port served over ice with tonic water, a lemon wheel, and fresh mint. The combination (locally abbreviated as 'porto tónico' or 'port tónico') has become the defining summer drink of outdoor Portuguese café culture and an increasingly popular international aperitif. White port, made from white Douro grapes (Gouveio, Malvasia Fina, Codega do Larinho), is fortified as all port is but fermented to a drier style — the extra-dry and dry versions have significant acidity that works perfectly with tonic. The tonic's quinine bitterness complements the grape spirit's sweetness; the ice lengthens and refreshes; the citrus ties the flavours together.
Use extra-dry or dry white port — medium or sweet versions produce a cloying result with tonic. Ratio: 50ml white port to 100ml tonic, over plenty of ice. Serve in a large wine glass to allow the aromatics to open. Fresh mint is pressed lightly before adding to release the oils without bruising. A good quality tonic (Fever-Tree, Schweppes Premium) is essential — the quality of tonic is as important as the port.
Taylor's Chip Dry and Quinta do Crasto Extra Dry are benchmark dry white ports for this preparation. The porto tónico is served in the Douro Valley's quintas (port wine estates) as the standard aperitif before lunch — often overlooking the terraced schist vineyards. An excellent non-alcoholic alternative can be made with Douro grape juice and tonic, which maintains the floral and mineral character without the fortification. The port tonic has recently arrived in cocktail culture as a more sophisticated alternative to gin and tonic.
Using sweet white port — too cloying. Cheap tonic with excessive sweetness and artificial quinine — compromises the drink. Insufficient ice — the drink must be very cold. Leaving out the mint — it ties the citrus and port aromatics together.
My Portugal by George Mendes