Remember when using our flavouring a little goes a long way. 1/4 tsp is approximately 40 drops. We made our recipe with our Vanilla Bourbon flavour and another batch with Marshmallow, using 1/4 tsp. Depending on the flavour you use, and your personal preference, you may want to adjust You can always start with 20 drops, mix it into your chocolate, taste and then adjust as needed.