For black/white/green pepper (Piper Nigrum) You would have a higher chance of germination if you bought seed as a lot of imported peppercorns are treated with growth inhibitors, the seeds don't come up that often in the UK but there are numerous suppliers in the US. If you use peppercorns from your larder then make sure they are white ones as they are the only ones made from ripe berries which may stand a chance of germinating.
Pink/red pepper (Schinus Terebinthifolius) is hardy & very easy to grow although it ends up being a 25' tree.
You can also grow szechuan pepper (Zanthoxylum Simulans) it is the seedpod rather than the seed itself which is eaten but again it grows into a 25' tree.
