More Coffee! One of the best things about cold brew is that during the extraction period, because heat is not introduced, the amount of caffeine remaining is higher than in your average cup of hot drip coffee. Very handy! Cold brew will also work well for those who don’t inhale coffee, but choose to savor – it’s already cold! Adding a splash of Espresso balsamic adds a bit of bright acidity and sweetness to the flavor, as Cold Brew on it’s own is quite light and mild, the combination is perfect.