Reduced vanilla supply and rising ice-cream prices

Thanks to tutor2u for this
http://www.tutor2u.net/economics/blog/price-hike-in-vanilla-from-madagascar-due-to-changes-in-conditions-of-supply?utm_medium=email&utm_campaign=Economics%20daily%20digest%20Thu%2031st%20March%202016&utm_content=Economics%20daily%20digest%20Thu%2031st%20March%202016+CID_2e8f3ef8276b788cc93c016a3974cb0c&utm_source=CampMonitor&utm_term=Price%20hike%20in%20vanilla%20from%20Madagascar%20due%20to%20changes%20in%20conditions%20of%20supply%20The%20British%20love%20their%20vanilla%20from%20Madasgascar%20-%20it%20has%20a%20distinctive%20smooth%20texture%20and%20taste%20that%20we%20seem%20to%20particularly%20enjoy%20However%20changes%20in%20conditions%20of%20supply%20are%20causing

and this explaining the role of elasticity
http://www.tutor2u.net/economics/blog/vanilla-ice-cream-and-elasticity?utm_medium=email&utm_campaign=Economics%20daily%20digest%20Fri%2015th%20April%202016&utm_content=Economics%20daily%20digest%20Fri%2015th%20April%202016+CID_1caa6b97f845fed25d8c7c4a096e9509&utm_source=CampMonitor&utm_term=Vanilla%20Ice%20Cream%20and%20Elasticity%20Weve%20been%20warned%20that%20the%20price%20of%20vanilla%20ice-cream%20could%20rocket%20as%20bad%20harvests%20mean%20a%20shortage%20of%20vanilla%20pods%20But%20as%20good%20economists%20will%20know%20the%20key%20word%20is