Thanks Jigtg - interesting read. Problem is my maths is a sad thing. I'll have to get my hubby to sort this out for me - or at least help me understand it in laymans terms. Happily for me I only used a very small crystal of menthol, more a 'tip shard' than a full crystal. Still, going to be extra cautious now. Did my post read as the taste is potent? I meant the crystals themselves are potent - when I opened the bag the smell really hit me. Can't say I tasted it in the solution, but I certainly smelled it & it was quite cool to the taste.
After your alerting me here - I went and researched menthol toxicity - and got to say after reading it I think I will skip this one & go back to peppermint. I read a child can die from a teaspoonful of pure menthol...that is a huge dose, but it's still a bit scary. Certainly made me think we should always research toxic possibilities of anything we are using and know the side effects upfront.
