Rich espresso coffee is a match made in heaven for many beer styles - and a fun addition to some wines! But do you use cold brew, add it to the boil, add it in secondary... whole bean or ground? There are too many options with varying results. Espresso bean natural flavoring extract just gets added to taste right before bottling time - no fuss! Use up to 4 oz. per 5 gallon batch of beer. Add to taste for wine and simple syrup solutions. 4 oz bottle.