Hi, new here. How long does 1/2lb last if it is drank daily? How long for 1lb? Also, how much Kava (tsp, TB, etc) needed to prepare a cup of Kava beverage in order to receive the positive benefits? I'm trying to stop drinking alcohol again and this time to remain sober, I'm a heavy drinker. I'm about to order my first Kava, either 1/2lb or 1lb. Thanks.