This album is only mentioned on
5/4TAKEPOD's album list, which has no information at all about it. I'm 95% sure it involves AIR arrangements in some way, since the title's a reference to a drink from it called "どろり濃厚 ピーチ味" (Thick Rich
Peach Flavor), but I can't find any information to confirm that.
The year 2001 is a guess, but it should be right given the catalog numbers, since its number appears between two 2001 albums.