How would one cure a buttercream?

I have cured Lemslip, Almond Butter and Heavenly bodies. I just put them in a regular soapdish and keep them under the sink while I cure them. I have a recommendation though.. when you get Lemslip or Heavenly bodies I would take off the added bits that are on the outside of the buttercream. I think that they are only there for decorative purposes (personally I don't know why they waste their time with these add-ons). I think the add ons are what you have to worry about going bad. I just got an Almond Butter from mail order and the add ons were actually sent in a little baggie which they attached to the top of the buttercream container. So far, I haven't had any of my buttercreams go off by leaving them out.

I personally would involve the fridge in my curing, but I had a buttercream go bad so I'm paranoid. (apparently it was something wrong with the batch maybe though so hopefully not common?)

I stuck my buttercream in the fridge for a few days and then left it out in the soapdish (not in the sun, obviously). I had Heavenly Bodies, but it was pretty firm, almost like Figs & Leaves soap.

I've cured Lemslip with no problems. The funny thing is that thought it made it last a lot longer, I almost didn't like it as much. I missed the softness and the nice way it coats because I use buttercreams for shaving. Now, when I want something different, I actually whip up my buttercreams instead. However, to make sure that it cures faster so you don't have to worry about spoiling, I actually cut my piece into little hotel sized slivers. It cures faster and is easier to handle in that shape.

Which buttercream are you trying to cure? The only buttercream I've tried so far is Skinny Dip. I forgot about mine for about 6 months and it sat in the deli container in my closet. It kinda cured on it's own.

I "accidentally" cured my Randy Buttercream from the last XMas run of it... it sat in my soap box for a year and is now hard as soap - work perfect though!

I have had different results with buttercreams so I'm kind of confused about what a butter cream is supposed to be like. Emporer of Icecream and Skinny Dip were both harder like soap but just a different texture. I just got Heavenly bodies and Almond butter and they are soft and squishy and wonderful and everything I thought a buttercream should be. Interesting thing - I bought all of them at the same store - just a month apart.

I suppose this depends what time of year you want to cure your buttercreams. Obviously, if it is a hot Summer it might melt and ooze everywhere, so if you keep it somewhere dry and cool, it should harden up fine. Maybe try a few days in the fridge and then keep it in a cupboard or something?