Add cold brew coffee to a large glass with ice.

In a glass measuring cup, add the milk, maple syrup, and salt. Use a milk frother in an up-down motion to mix and create foam. Once the foam is about double the milk, carefully pour on top of the coffee using a spoon to help push out the foam.

If you don't have a milk frother, you may add the milk, maple syrup, and salt to a jar with a lid, close the lid tight. Shake fast until everything is mixed and foam starts to appear. Pour over the coffee.