If you love chai lattes and everything s’mores, this Starbucks Iced S’mores Chai is about to become your new favorite summer drink. Made with creamy chai tea, sweet toasted marshmallow syrup, fluffy marshmallow cold foam, rich chocolate drizzle, and a buttery graham cracker topping, it’s like sipping your favorite campfire treat in latte form.

The best part? You can make this Starbucks copycat at home in just a few minutes for a fraction of the cost. Instead of spending $6–7 every time you’re craving one, simply keep homemade marshmallow syrup and chai concentrate in your refrigerator, and you’ll have everything you need for this delicious drink all week long.

Whether you’re looking to save money, customize the sweetness, or skip another coffee shop run, this homemade version tastes just as indulgent as the Starbucks original.

Why You’ll Love This Recipe

• Tastes just like the Starbucks Iced S’mores Chai
• Costs a fraction of the coffee shop price
• Ready in under 5 minutes
• Easy to make dairy-free or lower in sugar
• Perfect balance of spicy chai, sweet marshmallow, and rich chocolate
• Great served iced or hot

P.S. Love S’mores?

Here are a few more cozy recipes to make this summer:

• Starbucks S’mores Cold Brew
• Homemade Toasted Marshmallow Syrup
• S’mores Latte
• Homemade S’mores Creamer
• S’mores Popcorn

Starbucks Iced S’mores Chai Ingredients

Graham Cracker Topping (optional)

• 1 tablespoon salted butter
• 1 tablespoon brown sugar
• 2 crushed graham crackers
• Pinch of salt

Chai Latte

• 1 tablespoon marshmallow syrup (homemade or store-bought like Torani)
• 6 ounces chai concentrate (like Oregon Chai or Tazo)
• 4 ounces milk of choice
• Ice cubes

Marshmallow Cream Cold Foam

• 1 tablespoon marshmallow syrup (homemade or store-bought like Torani)
• 2 tablespoons 2% milk
• 3 tablespoons heavy cream

Alternatively: Froth together 2 ounces of Homemade Vanilla Sweet Cream with 1 tablespoon marshmallow syrup.

Toppings

• Chocolate sauce (homemade (omit the peppermint extract) or store-bought like Torani or Hershey’s)
• Graham cracker topping (optional)

How to Make a Starbucks Iced S’mores Chai

Graham Cracker Topping (optional)

Combine butter and brown sugar in a small saucepan over low heat. Once melted, stir in the crushed graham crackers and a pinch of salt. Continue cooking for about 5 minutes until lightly toasted and fragrant. Remove from heat and allow to cool.

Store leftovers in an airtight container in the refrigerator for up to 5 days.

Step 1: Prepare the Chai

To a glass, add the marshmallow syrup, chai concentrate, milk and ice, leaving room for the cold foam and toppings. Stir well to combine.

Step 2: Make the Marshmallow Cold Foam

In a separate glass or frothing pitcher, combine:

• marshmallow syrup
• 2% milk
• heavy cream

Froth until thick and creamy, about 20–30 seconds.

(Or froth 2 ounces Homemade Vanilla Sweet Cream with 1 tablespoon marshmallow syrup.)

Step 3: Assemble

Pour the marshmallow cold foam over the chai.

Finish with a drizzle of chocolate sauce and a sprinkle of graham cracker topping.

Serve immediately and enjoy!

Hot Starbucks S’mores Chai

Prefer a warm drink?

This recipe is just as delicious served hot.

Ingredients

• 1 tablespoon marshmallow syrup
• 6 ounces chai concentrate
• 4 ounces steamed milk
• Marshmallow whipped cream (or marshmallow cold foam)
• Chocolate drizzle
• Graham cracker topping

Instructions

Warm the chai concentrate until steaming (in the microwave or on the stove).

Steam your milk and combine it with the chai and marshmallow syrup.

Top with whipped cream (or marshmallow cold foam), drizzle with chocolate sauce, and finish with graham cracker topping.

Enjoy!

Starbucks Chai Ratios

Size	Marshmallow Syrup	Chai	Milk	Cold Foam
Tall	½ tbsp	4 oz	2 oz	1 oz
Grande	1 tbsp	6 oz	4 oz	2 oz
Venti	1½ tbsp	9 oz	6 oz	3 oz

Homemade Marshmallow Syrup vs. Store-Bought

Both work beautifully in this recipe.

If you’re looking for the closest Starbucks flavor while controlling the ingredients, I highly recommend making my Homemade Toasted Marshmallow Syrup. It has the perfect balance of toasted vanilla and marshmallow flavor and keeps well in the refrigerator for up to 3 weeks.

Need something quicker? Store-bought marshmallow syrups from Torani or Monin work great too.

Best Chai Concentrates

While any chai concentrate works, these are my favorites:

• Oregon Chai Concentrate
• Tazo Classic Chai Latte Concentrate
• Trade Joes Spiced Chai Concentrate

Sugar-Free Option

To make this recipe lower in sugar:

• Use sugar-free marshmallow syrup (or follow the sugar-free instructions in my homemade marshmallow syrup recipe)
• Use sugar-free chocolate sauce
• Replace the brown sugar in the graham cracker topping with monk fruit or allulose

Dairy-Free Option

Simply substitute:

• Dairy-free milk for the chai latte
• Country Crock Plant Cream (or another dairy-free heavy cream alternative) for the cold foam
• Dairy-free butter
• Dairy-free chocolate sauce

The drink is still wonderfully creamy and delicious.

Tips for the Best Starbucks S’mores Chai

• Use a more chai concentrate than milk for a stronger chai flavor.
• Don’t skip the chocolate drizzle—it completes the s’mores flavor.
• Homemade marshmallow syrup gives the freshest flavor and saves money.
• Make a batch of Homemade Vanilla Sweet Cream and graham cracker topping ahead of time for quick drinks throughout the week.

More Starbucks Copycat Recipes You’ll Love

• Starbucks S’mores Cold Brew
• Starbucks Iced Cherry Chai
• Starbucks Iced Gingerbread Chai
• Starbucks Pumpkin Cream Chai
• Starbucks Iced Apple Crisp Nondairy Cream Chai