What is wassail, exactly?
Wassail can mean a few things depending on the era and the place. Historically it could be a spiced, warmed ale or wine, and “wassailing” also refers to the tradition of toasting (and in some regions, orchard wassailing). These days, most home versions are a warm spiced punch built on apple cider with citrus and whole spices.
Can I make this in a slow cooker?
Yes. Toast the spices in a skillet first (worth it), then add everything to a slow cooker and heat on LOW until hot, about 2 to 4 hours depending on your slow cooker. Keep on WARM for serving.
Do I need the cranberry juice?
No, but I like it. It adds color and a tart edge that keeps the cider from tasting one-note. If you skip it, add an extra squeeze of lemon at the end.
How do I make it less sweet?
Use an unsweetened or lightly sweetened cider, skip any added sugar, and lean on lemon juice to balance. If it is still too sweet, add a small splash of water or extra cranberry juice.
What alcohol works best?
Bourbon, dark rum, brandy, and even spiced rum all play nicely. Add alcohol to the mug or after you turn off the heat so it stays smooth and does not cook off.
Can I use ground spices instead of whole?
You can, but go light and add gradually. Ground spices turn the drink cloudy and can taste dusty fast. If you must, start with about 1/2 to 1 teaspoon ground cinnamon, a tiny pinch of ground cloves, and a tiny pinch of ground allspice (optional). Simmer, taste, and strain through a fine-mesh sieve before serving.