Strawberry Creamsicle Dirty Soda with Marshmallow Cold Foam
A creamy, fruit-forward dirty soda with a thick marshmallow cold foam layer that holds on carbonation. Built with cream soda, strawberry syrup, vanilla extract, and a Jet-Puffed marshmallow cream foam that whips up in under 30 seconds.
Servings 1 drink
Calories 285kcal
Equipment
- Tall clear glass (16 oz)
- Handheld milk frother or mason jar with tight lid — shake 45–60 sec as substitute
- Small cup or jar for building the foam before pouring
- Long stirring spoon also used for the foam spoon-float technique
Ingredients
Strawberry Creamsicle Soda Base
- 1 cup cream soda chilled; sub: lemon-lime soda (Sprite) — reduce syrup by 1/2 tbsp to offset citrus; or sparkling water + 1 tsp vanilla syrup for lower sugar
- 2 tbsp strawberry simple syrup or Torani / Monin strawberry syrup; homemade: simmer equal parts sugar, water, and fresh or frozen strawberries 10 min then strain
- 1 tsp pure vanilla extract pure preferred; vanilla paste also works; skip only if using vanilla cream soda
- 1 cup ice cubes large cubes or pebble ice; chill glass 5 min in freezer first for best foam stability
Marshmallow Cold Foam
- 3 tbsp cold heavy whipping cream full-fat 36%+, straight from fridge; dairy-free sub: solid full-fat coconut cream chilled overnight — scoop solid part only
- 2 tbsp Jet-Puffed marshmallow cream or any marshmallow fluff brand; check label for gelatin-free if vegan; break up with fingers before adding to cream
- 1 pinch fine sea salt optional; balances sweetness and makes the marshmallow flavor more complex
Optional Garnish
- 1 fresh strawberry, sliced garnish; rim or float on foam
- 1 sprig fresh mint garnish; optional
Instructions
Build the Soda Base
- Place a tall clear glass in the freezer for 5 minutes, or fill it with ice water and dump it out right before you build the drink. A cold glass slows carbonation release and keeps the foam stable longer.
- Fill the chilled glass with 1 cup of ice cubes. Pour in 2 tablespoons of strawberry syrup and 1 teaspoon of vanilla extract. Stir once with a long spoon to combine the syrup and vanilla at the bottom of the glass.
- Slowly pour 1 cup of chilled cream soda down the side of the glass to preserve carbonation. Do not stir after adding the soda -- the pale pink color will develop as the syrup rises through the carbonation.
Make the Marshmallow Cold Foam
- Pour 3 tablespoons of cold heavy whipping cream into a small cup or jar first. Spoon 2 tablespoons of Jet-Puffed marshmallow cream on top. Starting in the cream before the frother contacts the fluff prevents clumping around the wand.
- Insert a handheld milk frother and run it for 20 to 25 seconds, moving it just below the surface. Stop when the mixture is thick, glossy, and spoonable but not stiff -- it should hold its shape when you lift the spoon but still pour slowly. Over-whipping makes it too dense to layer cleanly.
Layer and Serve
- Hold a large spoon face-down just above the surface of the soda. Slowly spoon the marshmallow cold foam over the back of the spoon so it spreads wide and lands as a layer rather than sinking. Aim to cover the full surface of the drink.
- Place a sliced fresh strawberry on the rim and add a small sprig of mint if you like. Serve within 2 minutes of adding the foam. Do not stir -- the pink-and-white layered look is intentional, and each sip pulls the foam through the soda naturally.
Notes
Dairy-free swap: replace heavy cream with solid full-fat canned coconut cream (chilled overnight) and froth with the marshmallow fluff the same way. Check that your marshmallow brand is gelatin-free if needed. Soda swap: lemon-lime soda works if cream soda is unavailable -- reduce strawberry syrup by 1/2 tablespoon to account for the citrus sharpness. Make-ahead: homemade strawberry simple syrup keeps refrigerated in a sealed jar for up to 5 days. Make the cold foam fresh -- it loses structure after 30 minutes.
