29. The jars are closed and must now be sterilized.
30. The bottom of a pot is covered with straw. The jars are placed on it, and then more straw put in between the jars to prevent them from knocking against each other.
31. A flat lid and a big stone on top of it will keep the jars steady and in place.
32. The pot is filled with water. The top jars must be at least two centimetres under the water.