Chef Jodie teaches you the difference between a double boil and a bain-marie cooking technique. 

For a double boil:

• Boil your water in a pot and then turn down to a simmer.
• Put the ingredients in a metal bowl and place on top of the pot.
• Mix slowly once it starts to melt.
• You can turn it down low and leave it for up to half an hour.

For a bain-marie: 

• Use the same pot of water.
• Place the ingredients into a heat proof dish and place that into the water.
• Adjust temperature accordingly.