Heat the sugar in the bowl of your Instant Pot set to saute. Set the timer for 35 minutes which will cover the time needed to make this miso caramel sauce.

Stir the sauce gently from time to time as it starts dissolving. This will prevent it from burning. Allow it to gently melt the sugar going from a light to a darker caramel colour.

It is important to add the butter only once the sugar has dissolved and it's a deep golden colour.

When the sugar has all dissolved, add the butter in parts whilst continuously whisking warning it is VERY hot – the butter will splatter quite a bit, just keep whisking and ensure that you do not touch this sauce.

If it looks like it is splitting, don't worry, just keep on whisking

When the sauce has become smooth and amalgamated (this happens quickly), add the cream and keep on whisking. Once it has amalgamated once again, add the miso paste and stir until it is thoroughly whisked in. 

Remove the bowl from the Instant Pot and allow the caramel sauce to completely cool