Homemade Iced Coffee Float
A classic American treat combining chilled coffee with a generous scoop of vanilla ice cream, creating a creamy, indulgent drink. The cold brew base is smooth and less acidic than hot coffee, letting the vanilla shine through without overpowering. Add a touch of syrup for sweetness and milk to mellow the flavors. Perfect for warm afternoons or as a dessert drink.
Steps
Before you start
- Make sure the cold brew coffee is chilled (prepare 8–12 hours ahead or use store-bought)
- Let vanilla ice cream soften at room temperature for 2–3 minutes so it scoops cleanly but stays frozen
- Use chilled glasses if possible to keep the float cold longer
Fill glasses with ice
- Divide the ice cubes between 2 tall glasses (10–12 ounces each), filling each about halfway.
- This chills the glass and keeps the float cold as it melts slightly.
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Ready when: glasses filled halfway with ice
Tip: Chilled glasses prevent the float from warming too quickly; store glasses in the freezer for 10 minutes before if time allows.
Add coffee and milk
- Pour 4 fluid ounces (120 ml) of cold brew coffee into each glass over the ice.
- Follow with 2 fluid ounces (60 ml) of cold whole milk per glass, pouring slowly so the milk swirls gently through the coffee.
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Ready when: coffee and milk combined in each glass
Tip: Pour the milk slowly for a marbled appearance; if you prefer a blended look, stir gently before adding ice cream.
Sweeten with vanilla syrup
- Add 1 tablespoon (15 ml) of vanilla syrup to each glass.
- Stir gently with a long spoon to combine the syrup evenly throughout the coffee and milk mixture.
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Ready when: vanilla syrup fully incorporated and no streaks visible
Tip: Stir slowly to avoid sloshing; the syrup will sink if you don't mix, leaving a sweet layer at the bottom.
Top with ice cream
- Using an ice cream scoop, place 2 generous scoops (about 2 ounces / 57 g per float) of vanilla ice cream on top of each drink.
- The ice cream will float and slowly melt into the coffee below.
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Ready when: ice cream scoops positioned on top of each float
Tip: Soften the ice cream for 2–3 minutes at room temperature so the scoop slides through cleanly; too-hard ice cream will shatter or crush instead of forming clean scoops.
Serve and enjoy
- Serve immediately with a long spoon for scooping the melting ice cream and stirring.
- Optionally, top with a dollop of whipped cream.
- Drink as the ice cream melts, stirring occasionally to blend the flavors.
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Ready when: float assembled and ready to serve
Tip: Use a tall glass and long spoon so you can easily reach the ice cream as it sinks; serve immediately so the ice cream doesn't melt too fast before you taste it.
Good to know
Tips
- Cold brew coffee is smoother and less acidic than hot brewed coffee, making it ideal for floats; if using hot coffee, let it cool completely to room temperature, then chill in the refrigerator for at least 2 hours.
- For a stronger coffee flavor, reduce the milk to 1 fluid ounce (30 ml) per glass and add an extra ½ tablespoon (7.5 ml) of vanilla syrup.
- The melting ice cream is the point—don't rush. Stir occasionally as you drink to blend the ice cream into the coffee, creating a creamy, frothy texture.
- Serve in chilled glasses and use ice cubes made from coffee (instead of water) for an extra coffee kick as they melt, though this is optional.
Make ahead
Cold brew coffee can be made 1–2 days ahead and stored in the refrigerator. Assemble floats just before serving for the best texture and presentation.
Storage & reheating
This drink is best consumed immediately. If you have leftover cold brew coffee, store it in a sealed container in the refrigerator for up to 5 days.
Substitutions
- vanilla syrup (store-bought or homemade) → 1½ teaspoons sugar or ½ teaspoon vanilla extract mixed with 1 tablespoon warm water. Homemade syrup is thinner than store-bought; dissolve sugar in warm water and let cool before adding to the cold float.
- vanilla ice cream, good-quality → coffee, chocolate, or salted caramel ice cream. Coffee ice cream doubles down on coffee flavor; chocolate and salted caramel create contrast.
- cold brew coffee, freshly chilled → strong chilled iced coffee (made by pouring hot brewed coffee over ice to chill quickly). Iced coffee will be slightly more acidic than cold brew but works well; avoid instant coffee, which tastes thin.
- whole milk, cold → half-and-half, heavy cream, or oat/almond milk. Richer milk (half-and-half) makes a creamier float; non-dairy options work but add less body.
