I am wondering if it is OK to make several batches of MMF ahead of time just to have in inventory. I have a cake coming up this Saturday, so I made the MMF last weekend (and colored it red and black). It is wrapped tightly in plastic wrap, and put in an air-tight bowl with a lid, in the fridge. I also made several batches of uncolored, just to have around for those last-minute cakes that always seem to come up. Does anyone know how long MMF lasts stored like this? Thanks!

It keep quite nicely when wrapped tight in plastic and kept in the fridge.

For how long?

I have never refrigerated mine! I wrap it tightly with a rub of Crisco, and in a tupperware container. I've had mine for several months.
When I chop off a piece that I need, I nuke it for about 10 seconds and it's perfect. Just did this last night with a cake.

I do like vickymackd, and have good results a month or so later when I take it out of the tupperware......

you freeze it?

I never freeze my MMF. I coat in shortening wrap tightly in a couple layers of plastic wrap and put inside an airtight bag. I leave at room temperature and have used it after 1 month, it tastes and works fine.