For quite a while now, we have heard a lot about oddball video experiments that mixed Mentos candies with Coke. Well, we don’t keep Coke in our house (maybe some Diet Coke...not sure), but we have some really old Diet Mountain Dew. So, with the free Mentos candy we got the other day at Costco, we tried putting a Mentos in a jar and then poured some Diet Dew on top.