This blackberry and marshmallow milkshake is rich, creamy, and slightly tangy with deep berry flavor balanced by sweet toasted marshmallow. It features a vibrant blackberry syrup swirl, a smooth vanilla-berry shake base, and a fluffy toasted marshmallow topping for a dramatic finish.
Perfect for café menus, dessert drinks, or premium blog content.
Ingredients (Serves 2 large shakes)
For the Blackberry Syrup
- 1 1/2 cups (200g) fresh or frozen blackberries
- 3 tablespoons sugar (adjust to taste)
- 1 tablespoon lemon juice
- 2 tablespoons water
For the Milkshake Base
- 2 cups vanilla ice cream
- 3/4 cup cold whole milk
- 1/2 cup blackberry syrup (from above)
- 1/2 teaspoon vanilla extract
For the Topping
- Whipped cream or marshmallow fluff
- 4–6 large marshmallows
- Fresh blackberries for garnish
Equipment
- Small saucepan
- Blender
- Tall serving glasses
- Kitchen torch (for toasting marshmallows)
Instructions
1. Prepare the Blackberry Syrup
In a saucepan over medium heat, combine blackberries, sugar, lemon juice, and water.
Cook for 6–8 minutes until berries break down and mixture thickens slightly.
Strain through a fine sieve for a smooth syrup (optional but recommended).
Allow to cool completely.
2. Create the Glass Swirl
Spoon several tablespoons of blackberry syrup into the inside of your glass.
Tilt and rotate the glass to create dramatic streaks along the sides.
Place the glass in the freezer for 5–10 minutes to set the swirl.
3. Blend the Milkshake
In a blender, combine:
- Vanilla ice cream
- Cold milk
- 1/2 cup blackberry syrup
- Vanilla extract
Blend until thick and smooth.
Adjust thickness:
- Add more milk for thinner consistency
- Add more ice cream for thicker texture
4. Assemble
Pour milkshake into prepared glasses.
5. Add the Marshmallow Topping
Top with whipped cream or marshmallow fluff.
Place marshmallows on top and toast carefully with a kitchen torch until golden brown.
Garnish with fresh blackberries.
Serve immediately.
Professional Tips
- For deeper flavor, add a pinch of salt to the syrup.
- Freeze glasses beforehand to keep the shake colder longer.
- If you do not have a torch, toast marshmallows briefly under a broiler.
- For a darker color, blend in a few whole blackberries directly into the shake.
Variations
- Add white chocolate syrup for extra sweetness.
- Use blackberry sorbet instead of ice cream for a fruit-forward version.
- Add crushed graham crackers for a s’mores-style twist.
- Substitute oat milk for a dairy-free option.
Storage
Best served immediately.
Blackberry syrup can be refrigerated in an airtight container for up to 5 days.
Blackberry & Toasted Marshmallow Milkshake
Equipment
- small saucepan
- blender
- tall serving glasses
- fine sieve (optional) For smooth syrup
- kitchen torch For toasting marshmallows
Ingredients
- 1 1/2 cups fresh or frozen blackberries (200g)
- 3 tbsp sugar
- 1 tbsp lemon juice
- 2 tbsp water
- 2 cups vanilla ice cream
- 3/4 cup cold whole milk
- 1/2 cup blackberry syrup (prepared above)
- 1/2 tsp vanilla extract
- whipped cream or marshmallow fluff (for topping)
- 4–6 large marshmallows
- fresh blackberries (for garnish)
Instructions
- In a saucepan over medium heat, combine blackberries, sugar, lemon juice, and water. Cook for 6–8 minutes until berries break down and the mixture thickens slightly. Strain through a fine sieve for a smooth syrup if desired, then allow to cool completely.
- Spoon several tablespoons of blackberry syrup inside each serving glass. Tilt and rotate the glass to create dramatic streaks along the sides. Place the glasses in the freezer for 5–10 minutes to set the swirl.
- In a blender, combine vanilla ice cream, cold whole milk, 1/2 cup blackberry syrup, and vanilla extract. Blend until thick and smooth. Adjust consistency by adding more milk for a thinner shake or more ice cream for a thicker texture.
- Pour the milkshake into the prepared glasses with the set blackberry swirl.
- Top with whipped cream or marshmallow fluff. Place marshmallows on top and carefully toast with a kitchen torch until golden brown. Garnish with fresh blackberries and serve immediately.