In a container that can be use for blending, Mustard Paste, Soy Sauce, Sesame Seeds and minced Garlic.
Using an emersion blender, blend the ingredients together.
Add the heavy Cream to the mix. IF you use the immersion blender to combine, be very careful. Only blend for two to three seconds at a time. If you over do it you will have Mustard Butter!
Rest in fridge until needed!