Look to ruby, LBV, tawny and white for more accessible ways in.

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Source: https://www.washingtonpost.com/lifestyle/food/the-vintage-stuff-is-glorious–and-pricey-but-there-are-other-ways-to-enjoy-port/2018/11/30/f0a73824-f364-11e8-bc79-68604ed88993_story.html