The famous "Weihenstephan" yeast from Germany. A widely used yeast strain that gives beer a clean finish and lets the malt really come through. Give this yeast a try and you might just have a new favorite!
This is marked as directly pitchable yeast and there are no rehydration instructions.
Some instructions for rehydrating yeasts:
Suspend yeast in 4 oz of warm water. Do not stir. Let stand for 15 minutes. Stir gently. Add an equal amount of wort to your solution. Cover, let sit for five minutes, and pitch.
Per the manufactures website: Sedimentation: high. Final gravity: medium.