Add <quantity>⅓<unit>cup</unit></quantity> of heavy cream and <quantity>2½<unit>tsp</unit></quantity> of matcha powder to a small saucepan. Mix it over low heat until the matcha is dissolved

Melt <quantity>1<unit>cup</unit></quantity> of white chocolate over a double boiler

Add the matcha mixture to the melted white chocolate while still hot, whisking until homogeneous

Add <quantity>1<unit>tbsp</unit></quantity> of room temperature butter and whisk to combine. Blend with hand blender until smooth

Transfer to a bowl or container, cover, and let cool. The matcha ganache is ready

Enjoy!