Okay, I'm thinking of trying a Champagne... excuse me, sparkling wine. I
have descriptions on the basic procedure, but need some sort of riddling
rack in which to stack the bottles during the final fermentation. Where can
I get some? Failing that, any ideas how to construct something usable?

Matthew in Montgomery

I bought used ones off of Presque Isle Wine Cellars in PA. They are
tough to make; these came from France and were bought off a winery
going out of business in Pittsburgh where I come from. (weird how
things can go full circle, huh? ).

You can certainly try the procedure outlined by Pp too, it's pretty
common to do that if you don't have the racks. Most people lift the
bottle a little (an inch or so) give it a sharp twist and drop it into
the case to move the sediment down.

The racks are heavy so shipping would be a chunk of change.

Joe