I made hummus tonight and got quite a workout trying to stir up the tahini. Should I keep it in the fridge or in the cupboard? I've always kept it in the fridge but just noticed that the label does not say to refrigerate after opening. Since I don't use it that often, figured fridge was better?

It seems to separate if at room temperature, but it turns to sludge in the fridge with lots of solids at the bottom. I need a skinnier whisk for my hand held blender to stir that up.

Where do you keep yours?