Colheita, meaning harvest or crop, are Ports from a single year but differ from a Vintage. They are essentially another style of Tawny, aged for a minimum 7 years in cask (often more). They are released when ready to drink; unlike Vintage ports they will not improve in bottle and need not be drunk up within days of opening.
Colheitas offer excellent value being less expensive than similarly aged Vintage Ports and are more of a rarity – even less Colheita is bottled than Vintage Port, typically only 1% of all Port produced in any given year.
Food matching is versatile, see the 10 Year old Tawny recommendations.