It could well have been the tap Tribs, it was semi jammed
It was the medicinal taste you get when chlorine reacts with phenols in the beer when items aren't rinsed properley after sanitisation.
My sanitisation procedure for line (air and beer), tap, posts and disconnect.
Dis assemble everything, clean with VWP, rinse with water, and soak in a soln of iodophor for 10 mins. I clean the hub to the kegerator in-situ with a WVP soaked towel only.
I the re-assemble everything. Using an empty corny, I fill it with a strong soln of VWP, pressurise the keg and draw the sanitiser through the tap t'ill there are no more bubbles in the line. I leave in this state for 20 min, then draw all the remaiming WVP through to waste.
I then empty the corny,rinse with water, and refill with a soln of iodophor. I then repeat the drawing process but for 10 mins this time.
I clean the posts using a iodophor soaked rag, which sits on the posts getting the occaisional twist during the above process.
I attach the keg and draw off the 1st 1/2 pint to waste
