Hot coffee over vanilla ice cream, a glug of red cream soda, and a chocolate-streaked glass that fizzes up the second you pour. The Witches’ Crimson Elixir is built around Hello Darkness, a dark roast bold enough to stay in the conversation when the ice cream and soda start talking. It looks like it came out of a fantasy novel. It takes about five minutes.

Think of it as a coffee float that dressed up for Halloween. Perfect for a spooky get-together, a candlelit movie night, or a Tuesday that needs a little drama. (We don’t do chaos, but we do foam.)
Why You’ll Love It
- A Halloween coffee drink that’s part float, part affogato, all dessert.
- Four ingredients to make it, plus optional toppers.
- Forgiving: a little more soda or a little less won’t ruin it. Taste, tweak, repeat.
- Looks impressive in a glass, especially with red and black sanding sugar on the rim.
Yield
1 serving
Time
5 minutes, no cooking
Vibe
Halloween coffee float
The Coffee That Makes This Work
Hello Darkness My Old Friend is a bold Guatemalan dark roast, and that depth is the point here. Ice cream and cream soda are both sweet and soft, so the coffee needs enough backbone to stay the first thing you taste. A mild roast gets buried. This one doesn’t. You could use another dark roast, but this is the one the recipe was built around.
Shop Hello Darkness →Available in whole bean, ground (auto drip or French press), and single serve cups. Never tried it? The 2oz sample is a good place to start: fresh roasted, enough for a few cups to know if it’s yours.
Ingredients
- 1 shot espresso, or about 4 oz strong brewed Hello Darkness
- 1 scoop vanilla ice cream
- 4 oz red cream soda
- Chocolate sauce, for the glass
- Optional: whipped cream, red and black sanding sugar
Equipment: a martini glass or any short, wide glass, an ice cream scoop, and a spoon for the chocolate.
Method
- Drizzle the glass. Streak chocolate sauce around the inside of the glass so it drips down in dark ribbons. Why it works: a cold glass keeps the chocolate from sliding straight to the bottom, so you get the streaky look.
- Add the ice cream. One generous scoop in the middle of the glass.
- Pour the coffee. Slowly pour the hot espresso or strong coffee over the ice cream. You’ll see the edges soften and melt.
- Add the soda. Pour the red cream soda down the side of the glass, not straight onto the ice cream. It will foam up fast and turn a creamy crimson. Pour until the foam reaches just below the rim. Why it works: the fizz whips the melting ice cream into foam, which is where the creamy texture comes from.
- Finish and serve right away. Top with whipped cream and a sprinkle of red and black sugar. Drink it while the foam is still tall.
Permission slip: yes, you may have a coffee float for dessert, a snack, or the “I handled the costume situation” celebration. It’s Halloween. Nobody’s checking.
Not Quite Right? Here’s the Fix
Make It Yours
- The sweetness dial: 3 oz of soda is coffee-forward, 4 oz is the standard, 5 oz is full dessert soda.
- Spooky-adult: for the grown-ups, add a splash of coffee liqueur or vanilla vodka.
- Dairy-free: use your favorite dairy-free vanilla ice cream. The foam still happens.
- No espresso machine? Brew the coffee extra strong (about 2 Tbsp of grounds per 6 oz of water) and use 4 oz.
- Affogato style: skip the soda, pour the coffee over the ice cream, and eat it with a spoon.
Quick Questions
What does a Witches’ Crimson Elixir taste like?
Like a cherry-vanilla coffee float: dark roast coffee, vanilla ice cream, and the sweet, creamy flavor of red cream soda, finished with chocolate.
Can I use regular brewed coffee instead of espresso?
Yes. Brew it strong (about 4 oz) so it holds up against the ice cream and soda.
Can I make it ahead?
Not really. The foam is the best part and it fades within minutes, so build it right before serving. You can brew the coffee and chill the glasses ahead.
Made this one? Hello Darkness is available whole bean, ground, and in single serve cups, so however you make your coffee, it works. Fresh roasted to order, every time.
Not sure yet? The 2oz sample is the right place to start: a few cups to know before you commit to a bag.
More recipes like this one are at The Menu.
