Our bitters recipe refills include the high-quality ingredients and cheesecloth needed to make 8 oz. of homemade bitters using our original bitters recipes. The refills do not include the infusion jars, bitters bottles, flask funnel, and bottle labels that are included with our complete bitters kits. You will need to add up to a cup of high-proof spirits, water, and 1/2 tsp. sugar to complete each of the recipes.