Add 5 tablespoons unsalted butter and allow it to come up to room temperature. The time this takes will depend on the temperature of your room, but 1 hour should be sufficient.
Add 5 tablespoons ORGANIC MISO WHITE, and 2 teaspoons sugar, and use a fork or small whisk to smash the ingredients together until the mixture is smooth and uniform in color.
Store the miso butter mixture in an airtight container in the refrigerator until you are ready to use it.