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Cold Brew Coffee with Oat Milk

This dairy free cold brew coffee is made with oat milk and is delicious and simple to make! Enjoy it hot or cold all year-round.

Cold brew coffee with oat milk in a mason jar on a white marble counter

Cold brew coffee with oat milk is easy to make at home.

All you need is coffee grounds, water (preferably filtered), a jar, something to strain the coffee from the grounds, and oat milk. That’s it!

I really enjoy having my dairy free cold brew coffee in the summer as an ice coffee, but it also makes a great coffee in the all year round.

Oat milk is one of my favorite dairy free milks, whether it is a hot coffee with oat milk or an iced coffee with oat milk.

So, naturally, my cold brew coffee is often going to have oat milk in it too.

If you enjoy this recipe, you may also enjoy my cold brew coffee with almond milk and my iced coffee with almond milk.

Choosing your Brand

I have tried a handful of oat milk brands and I can tell you, not all oat milks are created equal.

Some brands taste like oats and have the consistency of water. Other brands have a milder taste and are slightly reminiscent of milk. Oatly and Alpro are my two go-to brands.

When I visit New York, I really like Oatly, which I find to taste like regular milk and to be a little extra creamy. I’d assume this is true in Canada too.

In Israel, I only use the barista version of Oatly, which is still more watery than the regular Oatly in the States. I expect it is the same in Europe because that is where it is imported from.

For Israel and Europe, I find the Alpro oat milk indistinguishable from the Oatly Barista. However, the Alpro “Not Milk” oat milk I find to be almost identical to milk but a little sweeter – which I like.

Is cold brew dairy-free?

Cold brew coffee that is only ground coffee beans and water is dairy free. To keep it dairy free, you need to drink it black or add only dairy free milk products to it.

Is iced coffee dairy-free?

Iced coffee is not inherently dairy free. It is dairy free if you do not add any dairy to it and only use dairy free ingredients to make it.

Should I use filtered water?

If you have it, you should use it because it will give you a sweeter coffee in the end.

However, if you don’t have one, it shouldn’t stop you from making cold brew coffee.

Can I use a French press?

Actually, you can make cold brew coffee in a French press. You can simply press after leaving overnight.

What if I want to add flavor to my coffee?

If you want to add spices to your coffee, add a 1/2-inch cinnamon stick and 1 clove to the brew.

How do I avoid ice cubes diluting the coffee?

A popular trick to avoid ice cubes diluting your coffee is to make coffee cubes and use them.

What is special about cold brew coffee?

Due to containing less acidity, cold brew is less bitter than regular coffee.

Is cold brew stronger than regular coffee?

Cold brew coffee has more caffeine, but it has a smoother, more mild flavor.

Yield: 2 cups

Cold Brew Coffee with Oat Milk

Iced coffee in a mason jar on white counter

This dairy free cold brew coffee is made with oat milk and is delicious and simple to make! It is also great to have on hand in the summer for a quick iced coffee!

Prep Time 5 minutes
Rest Time 12 hours
Total Time 12 hours 5 minutes


  • 1/3 cup ground coffee (medium-coarse grind is best)
  • 1 1/2 cups cold water
  • Oat milk


  1. Add coffee grounds and water to a jar. Cover, shake to mix, and let rest at room temperature overnight or 12 hours
  2. Strain twice through a coffee filter, a fine-mesh sieve, or a sieve lined with cheesecloth.
  3. In a tall glass filled with ice, mix equal parts cold brew coffee and water, or to taste.
  4. Add oat milk to taste.
  5. To make hot coffee, heat in the microwave to desired temperture.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 66Total Fat: 1gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 13mgCarbohydrates: 15gFiber: 1gSugar: 10gProtein: 1g

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