I'm looking to open up a gelateria/coffeeshop in the very near future. In order to keep my investors happy, I need to give them some idea that they will not lose their money. In order to do that, I need to figure out how much it will cost to produce all of our products. I have an analysis of drip coffee, tea and the gelato already done, but I can't seem to find enough information on espresso drinks to do them. If anyone has any information on how much espresso is required to brew one shot, I can get the ball rolling to figure that out as well. Additionally, if anyone has already done all of this work, I would greatly appreciate the information, as would my investors. Thanks in advance.