Add the wine, broth, and thyme and simmer to reduce by about half. Remove the thyme sprigs and turn off the heat. Add the last 2 tbsp of butter and swirl the pan to melt. Season with salt and pepper.
With a mix of portabella and porcini mushrooms sauteed with rosemary, thyme, shallots, and vegetarian Worcestershire sauce ... To finish the Wellington and reduction, you'll just need a frozen ...