Cold Foam

Gather all ingredients.

Combine milk and simple syrup in a small measuring cup.

Submerge the end of a milk frother in the mixture.

Froth until consistently foamy, 15 to 20 seconds for skim milk or 2 to 3 minutes for almond milk.

Divide cold brew coffee between 2 glass mugs.

Spoon cold foam over coffee. Sprinkle with nutmeg or cinnamon.