A ha !!
I'm glad that you didn't enjoy it as you've clearly stumbled across a typical fault with Sancerre ( both white and pink ).
I tried to describe the fault to you last year and described the smell and taste as soapy....you've gone for dish cloth.
All that matters is we tasted the same thing..
The point is though is that this wine can be perfect. I've bought 6 bottles in total and 4 were fine and two were as you describe.
Gluck's description on the superplonk site
" Fournier Sancerre Rose 2005 2005 France 75 cl bottle
Very elegant genteel cherries. An expensive rose, but good pinot’s like that. 16/20 "
So it must be a fault...as Sancerre always has a cork maybe it is some kind of cork taint ?
This is the best rose i've ever had but the fact that 1 bottle in 3 is bad puts me off buying it..
G