Place tahini, water, miso and turmeric (if using) in a bottle or blender. Using a stick blender or your regular blender / food processor puree until smooth. You can mix by hand but it’s hard to get the miso completely emulsified so your sauce will be a little lumpy.

Taste and season if needed, although I find the miso provides enough salt. Keeps in the fridge for weeks. Will thicken a little over time and if you’re using fresh turmeric the colour will intensify over time too.