The history of adding spices to wine, making it mulled wine. Sources for the episode can be found here
- https://britishfoodhistory.com/2011/12/24/mulled-wine/
- http://www.historicfood.com/Hippocras%20Recipes.htm
- https://drinkhacker.com/2017/12/13/how-to-make-conditum-paradoxum-ancient-roman-spiced-holiday-wine/
- https://vinepair.com/articles/history-of-mulled-wine/
- https://www.vivino.com/wine-news/the-history-of-mulled-wine
- https://theculturetrip.com/europe/germany/articles/a-brief-history-of-gluhwein-germanys-favorite-christmas-drink/
- https://en.wikipedia.org/wiki/Mulled_wine#German_and_Austrian_Gl.C3.BChwein