Port from a single year harvest. Instead of an indication of age like a blended tawny (10, 20, 30, 40...) the year is always mentioned in the label. Nevertheless, they should not be mistaken with Vintage Port. Once that the "Colheita" must age a minimum of seven years in oak cask (but of course the complexity and the refined aroma and flavors could not reach the heels of an old "Colheita", like for example a rare White "Colheita" Golden White from 1952 bottled in 2009...57 years in french oak pipes).
"The 2004 Colheita Tawny Port Dalva is a bar-top bottling from April 2019, a field blend of grapes like Touriga Nacional, Touriga Franca and Tinta Roriz (and others). It has 116 grams per liter of residual sugar. This elegant and fairly young Tawny has moderate mid-palate depth and power but a fresh and lively feel. It's not terribly intense or powerful, but it tastes rich and lingers well on the finish. It has some complexity and a trace of brandy, but complexity is not the key here. That it has a reasonable amount to go with its smooth texture and fresh feel is a nice bonus in this wine's relative youth." The Wine Advocate, 90 Points