For the bread:

1. Preheat oven to 350. Butter a non-stick 8×4 loaf pan.
2. In a bowl, whisk together flour, salt, baking soda and matcha.
3. In the bowl of a stand mixer let the paddle attachment mash your bananas for a minute or two.
4. Add eggs, brown sugar, butter, and vanilla extract. Mix until combined.
5. Add flour mixture a cup at a time, until well combined. Scrape after adding each cup.
6. Fold in white chocolate chips.
7. Pour batter into loaf pan. Bake for just shy of an hour.
8. Test the loaf with a baking skewer. When it emerges cleanly from the loaf, remove from oven and let cool.
9. When completely cool, remove from pan and frost with Russian buttercream.

For the frosting:

1. Whip the butter for 8 minutes, scraping down the bowl of the stand mixer from time to time.
2. Add matcha, vanilla extract, and a small pinch of salt. Whip until combined.
3. Add condensed milk and whip for five minutes, scraping down the bowl from time to time.