
The Wine Lab
A sciency podcast series about wine, chemistry, flavor, smell and everything in between hosted by wine and sensory scientist, book worm and food aficionado, Andreea Botezatu.
The Wine Lab
Wine with Spirit: The World of Fortified Wines
Send me your thoughts at ibotezatu5@gmail.com
What do Port, Sherry, Madeira, Marsala, and Vermouth all have in common? They’re wines with an extra ingredient — spirit. In this episode of The Wine Lab, Dr. Andreea Botezatu explores how fortification began as a practical solution for preserving wine on long sea voyages and evolved into a craft that shaped trade, taste, and culture.
From Shakespeare’s Falstaff praising “sack” to George Washington’s love for Madeira, we’ll travel through history and a little chemistry to understand what makes fortified wines so enduring. You’ll learn about their different origins, what spirits are used (always grape-derived!), how to serve them, and the best ways to enjoy them — from chilled Fino with tapas to Vintage Port and Stilton by the fire.
A story of science, adaptation, and taste — all in one small pour.
Glossary
Aguardente vínica
A neutral grape brandy used to fortify Port and other Portuguese wines. It typically sits around 77% ABV and is added mid-fermentation to stop the process and preserve natural sweetness.
🔗 Instituto dos Vinhos do Douro e do Porto (IVDP)
Amontillado
A style of Sherry that starts aging biologically under flor (like a Fino), then continues oxidatively after the flor dies off, creating nutty, caramelized aromas.
🔗 Sherry Wines – Amontillado Overview (Consejo Regulador)
Copita
A small, tulip-shaped glass traditionally used for serving Sherry. Today, the Sherry Council recommends small white-wine glasses instead, to allow greater aromatic expression.
🔗 Sherry Wines – How to Serve Sherry
Flor
A layer of yeast that forms naturally on the surface of Fino and Manzanilla Sherries, protecting the wine from oxidation and producing unique acetaldehyde-driven aromas (almond, green apple, saline).
🔗 Sherry Wines – The Role of Flor
Fino
The driest style of Sherry, aged entirely under flor. Fresh, crisp, and delicate, often served chilled with tapas or fried foods.
🔗 Sherry Wines – Fino
Madeira
A fortified wine from the Portuguese island of Madeira, famous for its oxidative and heat-influenced production process (estufagem). Styles range from dry (Sercial) to rich (Malmsey).
🔗 Instituto do Vinho, do Bordado e do Artesanato da Madeira (IVBAM)
Marsala
A fortified wine produced around the city of Marsala in western Sicily, Italy. Often made with local varieties like Grillo and Catarratto, and sometimes enriched with cooked grape must (mosto cotto).
🔗 Consorzio di Tutela del Vino Marsala DOC
Oloroso
A Sherry style aged entirely by oxidation, resulting in a full-bodied, nutty, and often semi-sweet wine.
🔗 Sherry Wines – Oloroso
Port
A fortified wine from Portugal’s Douro Valley, produced in various styles (Ruby, Tawny, Vintage). Fermentation is stopped early by adding grape spirit, retaining residual sugar.
For more detailed wine science checkout my YouTube channel here: https://www.youtube.com/@Enology_channel