This is a wonderful drink - and I enjoyed them often when we first moved to Costa Rica. However, be forewarned that pineapples coming from Latin America are HEAVILY treated with pesticides, many of which are illegal in the U.S.. So I would question the use of the peel (which is what makes this drink so delicious). Once I found out the secret ingredient, I don't drink them anymore. Latin America, and Costa Rica in particular, have a very high incidence of stomach cancers due to the large consumption of treated fruits and vegetables. If you're going to make this, I would suggest using a really potent fruit wash to try to clean as much of the pesticide as possible, or try to find an organic source.