4lt Jar with BPA Free plastic Tap, With Cloth Cover. Free Postage Olivers Kombucha Kits Sale! from $38.00 $0.00 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Brew our own kombucha in our 4lt Glass Jars with BPA Free plastic tap. With the convenient tap you can pour your brew straight in to your bottles for the fridge with no leaking. Comes with a free cloth cover. $14 standard postage.