Put the open jars and the lids into a large pot and fill the jars and the pot with cold water. Jars and lids must be submerged!

Slowly heat the pot, bring to a boil and boil for 10 minutes.

Remove the jars and lids with tongs and put them on a clean kitchen towel to dry off and cool down.

Rinse the jars with hot water.

Place them on a baking tray (not the lids!) and put it in the oven.

Heat up the oven to 140 °C / 285 °F top/bottom heat.

Once the oven has reached that temperature, set your timer for 15 minutes.

Take the jars out of the oven, either with tongs or oven mitts. Don't touch the rim or the inside of the jars! Put the jars on a clean kitchen towel and let them cool down.

The easiest but also the longest method to sterilise jars is in the dishwasher. It's especially suitable when you have many or large jars of one litre (1.8 pt / 35 oz) or more.

Put all the jars upside down, as well as the lids (separately), into the dishwasher.

Do not add detergent! Also, do not add dirty dishes. Only the jars and the lids are allowed in that wash cycle!

Choose the hottest programme and start it.

Once the programme is finished, let the jars and lids cool off inside the dishwasher.

The fastest method to sterilise jars is in the microwave. Do not sterilise lids that way! They must be boiled in water for 10 minutes.

Fill the jars with water up to one-third.

Put them in the microwave at 600 Watt and wait till the water is boiling.

Leave them in the microwave for one further minute.

Carefully remove them with tongs or oven mitts, or let them cool off in the microwave.