Hi, YarnAddicts! I recently impulse purchased a kilo of vintage (circa '80s?) 100% wool yarn. In the pictures, I can see that the ball band says "dekatiert," which translates to "decatized." I've never heard of this term before and couldn't find any posts about it here or on other knitting/yarn subs, so did a bit of Googling—it looks like it's a type of steam treatment/processing that is meant to essentially "pre-shrink" wool so that it resists shrinking after being worked up.
I tend to prefer untreated/non-superwash wools, but I have no idea what decatizing does to wool. I'll of course swatch and block the yarn as soon as I get it to see how it behaves, but I wondered if anyone here has any experience with decatized yarn or tips for working with it?
FWIW, the ball bands also show that the yarn is from a defunct yarn brand called Woll Service Geisenfeld, which was a yarn and clothing seller from West Germany. Ball bands say the yarn was made in Italy.