This releatively "new" version of an "old" rosin is a bit on the pricey side, but it's got a growing reputation of being worth every penny. Manufactured here in the USA, it has a median texture, leaning towards softness - not soft and "goopy" like some popular rosins, and not hard and flakey like others. It has become known through the grapevine that is is produced by Kolstein. However, it is a very different formula (and list of ingredients) from the Kolstein rosins, and as similar as is practical to the original Wiedoeft formula from the 1950s and 1960s as possible. They even went through the trouble to design and create specific components and pouring equipment exclusive to the manufacture of this particular rosin, so it doesn't even share production machinery with Kolstein's other rosins.
Wiedoeft™ Bass Rosin is tested, cured, and put through strict quality controlled processes to ensure the finest quality. In our testing, it gets a nice, but not overwhelming stickiness to it, requiring only a few smooth and easy glides to fully rosin the bow well. A little seems to go a long way! Tonally, it posesses a nice clarity without being harsh, and depth and warmth without being overly boomy. Of course, a lot depends on strings and technique. But it worked very nicely, and wasn't messy or flaky. Very impressed!
The rosin comes in a special silicon roll-down design which protects the quality regardless of climate. It has also been noted that the rosin has excellent shelf-life, and is resistant to drying out and crystallizing. Once used, the rosin will show a continual wetting action allowing for easy application to the hair of the bow, and minimal powdering on the strings and instrument.