I mean it’s butter with extra flavours. And it only takes a few minutes to make the most amazing sauce.
What’s not to love about that?
The only trick here is you need to have your butter at room temperature before starting. However, you can always give it a zap in the microwave if you forget. Apart from the middle of Summer I keep some butter in the pantry so it’s always ready to go.
I’ve used shiro or white miso here. It has the mildest flavour of the miso pastes. If using a darker miso, start with less and add to taste.
And if you don’t have any miso you should get some (see here for other miso ideas) or see the variations below for a miso-free option.